Parameter Category Specification Assembly Type Low-Voltage Switchgear Functional Unit / Cabinet Standard IEC 61439-1 & -2 Internal Separation Form 1 (F1) - Common compartment for all live parts. Busbar System Rating • Rated Current (Ibm): 1250 A • Short-Time Withstand (Icw): Typically 35-50 kA for 1s (depends on design) • Peak Withstand (Ipk): ~2.2 x Icw Main Protective Device • Type: Emax E1 Frame, Draw-out Air Circuit Breaker • Rated Current (In): Matches or is derated from busbar, e.g., 1250A or 1000A. • Trip Unit: Electronic (PR1/P) with display. Protection functions: LSI. • Breaking Capacity (Icu): Typically 50 kA at 400V for this configuration. Key Breaker Features • Draw-out (W) for easy maintenance. • Motor Operated (M) for automatic spring charging. • Shunt Trip (P) for remote opening. • Additional accessories like auxiliary contacts (OF/SD) and undervoltage release (MN) are highly probable but not explicitly stated in this short code. Control Voltage The motor (M) and shunt trip (P) require an auxiliary control supply (e.g., 110V DC, 220V DC, or 230V AC). This must be specified separately. Typical Configuration This describes a single feeder compartment in a larger switchboard (like MNS Digital) or a standalone cabinet. It would include: • The draw-out E1 breaker • Necessary shutters and interlocks • Cable connection chambers • Local control and indication (possibly a door-mounted mimic) IP Rating (Enclosure) Typically IP31, IP41, or IP54 depending on the overall switchgear series.

Technical Profile Parameter Category Specification Series / Frame ABB SACE Emax, E1B Frame Rated Operational Current (In) 1250 A Rated Operational Voltage (Ue) 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Poles 3 Breaking Capacity (Icu at 400V AC) 50 kA (F version) Mounting Fixed Trip Unit PR121 Electronic Trip Unit Protection Functions LSI • L (Ir): 0.4 - 1.0 x In (500A - 1250A) adjustable. • S (Isd): 1.5 - 10 x Ir adjustable. Time delay adjustable. • I (Ii): 2 - 14 x In adjustable or OFF. Standard Included Accessories • Shunt Trip (MX) for remote opening. • Auxiliary Contacts (OF/SD) 2NO+2NC for status. • Undervoltage Release (MN) for loss-of-voltage tripping. Termination Front Terminals for power connection. Operation Spring-operated stored energy mechanism. Manual or electrical charging. Manual or electrical closing. Communication (Optional) The PR121 trip unit can be equipped with an optional communication module (Ekip Com) for Modbus, Profibus, etc. Standards IEC 60947-2, UL 489

Technical Parameters: E1 vs. E2 Frames Parameter Category E1 Frame E2 Frame Frame Size Code E1 E2 Rated Ultimate Current (Iu) Up to 1600 A Up to 2000 A (Common) / 2500 A (E2.5 variant) Typical Model Examples E1.1 (800A), E1.2 (1000A), E1.3 (1250A), E1.4 (1600A) E2.1 (1600A), E2.2 (2000A), E2.3 (2500A), E2.4 (3200A), E2.5 (4000A), E2.6 (5000A), E2.7 (6300A) Rated Operational Voltage (Ue) 690 V AC (Both frames) Breaking Capacity (Icu) - Example at 400V AC High (H) Version: 50 kA, Normal (N) Version: 65 kA, High (S) Version: 100 kA (Varies by specific model and trip unit). High (H) Version: 70 kA, Normal (N) Version: 85 kA, High (S) Version: 100-150 kA (Varies, E2 frames offer higher ratings). Trip Units (Common Types) Electronic: PR121, PR122, PR123. Thermal-Magnetic: TMD, TMA, MIC2.0, MIC5.0, MIC6.0 (Deprecated). Operating Mechanism Spring-operated stored energy mechanism. Manual or electrical charging. Manual or electrical closing/opening. Mounting Style Fixed (Standard) or Draw-out (Plug-in) versions available. Draw-out versions allow easy maintenance and testing without disconnecting power cables. Poles 3-Pole or 4-Pole versions available. Communication Via electronic trip units (e.g., PR122/P) with optional communication modules (e.g., Ekip Com) for Modbus, Profibus, Ethernet/IP, etc. Key Physical Difference Smaller physical size, lighter weight, designed for lower current applications. Larger physical size, more robust construction to handle higher currents and forces. Typical Application • Main incomer for medium-sized transformers (e.g., 1000-1250 kVA). • Large feeder protection. • Large motor protection. • Main incomer for large transformers (e.g., 1500-2500 kVA). • Bus-tie breaker in large switchboards. • Generator main breaker. • Protection of very high power loads. Approx. Dimensions (W x H x D) for 3P Fixed ~ 260mm x 400mm x 300mm (Varies by model) ~ 300-400mm x 500-600mm x 350-450mm (Larger for higher current variants) Approx. Weight for 3P Fixed ~ 45 - 70 kg ~ 80 - 150 kg

Technical Specifications Parameter Category Specification Product Type Split-Core (Wrapping-Type) Current Transformer Standard IEC 61869-2 (Measuring Transformers) Rated Primary Current (Ipn) 300 A Rated Secondary Current (Isn) 1 A or 5 A (The exact secondary current is a key variant. This code likely specifies one, with R1 potentially indicating 1A. The product label will confirm.) Accuracy Class Typically Class 1 or Class 0.5 for measurement. Common for this type is 1.0 (1%). Rated Output (VA) Commonly 2.5 VA or 5 VA at the specified accuracy class. Accuracy Limit Factor (ALF) Typically 5 (for measurement purposes, not protection). Frequency 50/60 Hz Rated Insulation Voltage 0.72 / 3 kV (Category III, for installation on systems up to 1000V AC). Core Construction Split-core, with a secure latching or screw-clamping mechanism. Window Diameter / Size A key physical parameter determining the maximum conductor size it can accommodate. Common sizes are Ø50mm, Ø65mm, or rectangular openings (e.g., 80x30mm). Mounting Can be mounted via integrated lugs, DIN rail clip (optional), or simply secured around the conductor. Connections Secondary terminals are typically screw-type for secure connection of measurement wires. Ambient Temperature -25°C to +70°C (Operating) Safety Standard Designed for connection to secondary circuits which are normally earthed. The secondary must NEVER be left open-circuited under load. Typical Use Connecting to: • Multi-function energy meters (e.g., ABB B23, B24 series) • Power quality analyzers • Building Management System (BMS) inputs • SCADA system transducers

Technical Parameters Parameter Category Specification Compatible Breaker Series ABB SACE Tmax XT Molded Case Circuit Breakers (MCCBs) - Fixed and Plug-in versions. (Also compatible with some earlier T, TL, and XT1 breakers with appropriate adapters). Rated Frame Current (In) Must match the Tmax XT frame size. Compatible with multiple frames, typically from XT1 (160A) to XT4 (630A). The PR121/P is scaled; its settings adjust based on the installed breaker's frame size. Power Supply Self-powered from the breaker's internal current sensors. No external auxiliary power required for protection and basic functions. Core Protection Functions • Long-time Protection (L) Adjustable Settings: - Ir (Rated Current): 0.4 to 1.0 x In (in steps). - tr (Time Delay): Adjustable via selection of I²t inverse-time curves (e.g., Curve 1, 2, 3). • Short-time Protection (S) Adjustable Settings: - Isd (Short-time Current): 1.5 to 10 x Ir (in steps). - tsd (Short-time Delay): Adjustable in seconds (e.g., 0.1s or 0.2s) or can be set to OFF. • Instantaneous Protection (I) Adjustable Settings: - Ii (Instantaneous Current): 2 to 14 x In, or can be set to OFF. • Ground-Fault Protection (G) Available. Adjustable Settings: - Ig (Ground Fault Current): 0.2 to 1.0 x In (or fixed steps like 100A, 200A...). - tg (Ground Fault Delay): Adjustable in seconds (e.g., 0.1s, 0.2s, 0.3s) or INST (instantaneous). Measurement & Display (/P Feature) • Display Backlit LCD display (monochrome). • Measured Values Real-time display of: Phase currents (L1, L2, L3), Neutral current (if sensor present), Max current, % Load. Communication Optional. Requires an add-on communication module (e.g., Ekip Com module) to enable Modbus RTU, Profibus DP, or DeviceNet. Diagnostics & Logging • Pre-alarms for overload (e.g., 90%, 105%). • Trip Cause Indication on display (e.g., L, S, I, G). • Last Fault Value recording. Configuration Via front keypad or via ABB Ekip Connect PC software (requires optional USB or communication module). Ambient Temperature -25°C to +70°C (Operating) Standards IEC 60947-2, UL 489 Key Feature Selectivity (Coordination): The adjustable Isd and tsd (S function) allow for time-current selectivity with downstream breakers. The adjustable Ii (I function) can be used for current selectivity.

Technical Specifications Parameter Category Specification Product Line / Series ABB SACE Emax (E4 Frame) Device Type Fixed-Mounted Air Circuit Breaker (ACB) Model Code Breakdown L = Fixed Thermal-Magnetic Trip Unit (TMD) 40 = E4 Frame Size Code 25 = Rated Current (In) = 2500 A H = Breaking Capacity = High (Typically 70 kA Icu at 400V AC) Standard Compliance IEC 60947-2, UL 489 Rated Operational Voltage (Ue) 690 V AC Rated Insulation Voltage (Ui) 1000 V AC Rated Ultimate Short-Circuit Breaking Capacity (Icu) 70 kA at 400V AC (for "H" version). At 690V AC, this rating is lower (e.g., 50 kA). Rated Service Short-Circuit Breaking Capacity (Ics) Typically 100% of Icu (e.g., 70 kA) for category Ics = Icu. Rated Operating Current (In) 2500 A (Continuous, at 40°C ambient). Trip Unit Type Fixed Thermal-Magnetic (TMD/LI - "L" in model) • Long-Time Protection (L) Fixed inverse-time thermal tripping characteristic. Threshold is preset to the breaker's rated current (2500A). • Short-Time Protection (S) Not adjustable (fixed magnetic trip). The "I" in LI indicates an Instantaneous-only magnetic trip for high-level short-circuits. No adjustable short-time delay. • Instantaneous Protection (I) Fixed threshold, typically at a high multiple of In (e.g., ~10xIn). • Ground-Fault Protection Not included in standard L version. Control & Accessories • Standard Operating Mechanism Manual charge spring (stored energy), with manual ON/OFF handle. Can be equipped with an electric motor for remote electrical closing (common option). • Shunt Trip (MX) Optional, for remote electrical tripping. • Undervoltage Release (MN) Optional, for automatic tripping on loss of control voltage. • Auxiliary Contacts (OF/SD) Optional, for signaling breaker status (ON/OFF/Tripped). Mechanical & Electrical Life • Mechanical Endurance ≥ 20,000 operations • Electrical Endurance ≥ 5,000 operations at full rated current Mounting Fixed installation in switchgear compartments. It is not draw-out. Connection Front or rear horizontal/vertical power connections for busbars or large cables. Poles 3-Pole or 4-Pole versions available (model code may differ for 4P). Dimensions (Approx. for 3P) Width: ~ 300-400 mm, Height: ~ 400-500 mm, Depth: ~ 300-400 mm (Varies). Weight (Approx.) ~ 80 - 120 kg Ambient Temperature Operating: -5°C to +40°C (Derating above 40°C applies)

Parameter Category Specification Device Platform ABB Relion® 650 Series, REX521 Feeder Protection Relay Standard Compliance IEC 60255, IEC 61850 (Ed.2), IEEE C37.90 Rated Auxiliary Supply 48 - 250 V DC (Wide Range) Protection Functions Configurable via software. Standard library includes: • Directional/Non-directional Overcurrent (50/51, 67) • Directional/Non-directional Earth Fault (50N/51N, 67N) • Over/Under Voltage (27/59) • Over/Under Frequency (81) • Breaker Failure (50BF) • Thermal Overload (49) Analog Inputs • Current: At least 4 channels (3-phase + earth), 5A nominal. • Voltage: 3-phase voltage inputs (typically 100/110V line-to-line or phase-to-neutral) are standard. Binary Inputs (BI) Minimum 16 channels, 24-48V DC. Binary Outputs (BO/Relays) Minimum 8 channels, Form-C contacts. Communication Interfaces • Ethernet: At least 1 port (RJ45 or fiber) for IEC 61850, IEC 60870-5-104. • Serial: At least 1 RS485 port for Modbus RTU or IEC 60870-5-103. • Front Port: USB for local configuration. Human-Machine Interface Graphical LCD with keypad. LED indicators. Measurement & Metering High-accuracy measurement of I, V, P, Q, S, PF, f, kWh, kVARh. Class 0.5. Event & Disturbance Recording Event recorder (≥ 1000 events). Fault recorder (oscillography) capability. Configuration Software ABB PCM600 – Universal engineering tool for setting, logic configuration, and documentation. Typical Mounting Panel-mounted (4U height, 19-inch rack) or DIN rail mounting variant possible.

Technical Parameters Parameter Category Specification Compatible Breaker Series ABB Emax 2 (E2) Air Circuit Breakers (Fixed & Draw-out versions). Rated Frame Current (In) Matches the breaker frame size. Common frames: E2.1 (1600A), E2.2 (2000A), E2.3 (3200A), E2.4 (4000A), E2.5 (5000A), E2.6 (6300A). The PR122/P is scaled for these ranges. Power Supply Self-powered from the current sensors of the breaker. No external auxiliary power required for basic protection functions. Core Protection Functions (LSI) • Long-time Protection (L) Adjustable Settings: - Ir (Rated Current): 0.4 to 1.0 x In (in steps). - tr (Time Delay): Adjustable, typically following an I²t inverse-time curve. • Short-time Protection (S) Adjustable Settings: - Isd (Short-time Current): 1.5 to 15 x Ir (in steps). - tsd (Short-time Delay): Adjustable in seconds (e.g., 0.05 to 0.5s) or as I²t curve. Can be set to OFF for selectivity. • Instantaneous Protection (I) Adjustable Settings: - Ii (Instantaneous Current): 1.5 to 15 x In, or fixed high value (e.g., 20kA). Can be set to OFF. Ground-Fault Protection (Optional) Available as an add-on module (PR122/P + G). The base LSI version does not include ground-fault protection. Measurement & Display • Display Backlit LCD graphical display on the trip unit. • Measured Values Real-time display of: Phase currents (L1, L2, L3), Neutral current (if sensor present), Ground current, Max current, Power (kW, kVA), Power Factor, Frequency, Energy (kWh), etc. • Metering Accuracy Class 1 per IEC 61557-12. Communication Standard: RS485 port with Modbus RTU protocol. Event Logging Stores time-stamped records of trips, alarms, and breaker operations (Open, Close). Configuration Via front keypad or via ABB Emax Connect PC software through the communication port. Testing Built-in trip test function to verify the health of the trip unit and the breaker's operating mechanism. Ambient Temperature -25°C to +70°C (Operating) Standards IEC 60947-2, UL 489, CSA C22.2 Key Feature Selectivity (Coordination): The adjustable S and I delays allow for precise time-current coordination with downstream breakers, minimizing outage impact during a fault.

Technical Parameters Parameter Category Specification / Interpretation Type Window-Type (Bushing-Type), Single-Turn Primary, Cast Resin Insulated Current Transformer Standard IEC 61869-1 & IEC 61869-2 (formerly IEC 60044-1) Rated Primary Current (Ipn) Likely 100A, 150A, 200A, 300A, or 400A. The exact value is defined by the full model. "107" might indicate a 100A base. Rated Secondary Current (Isn) 1 A or 5 A (Most common secondary ratings). Accuracy Class -AA Suffix Interpretation: • The first 'A' very likely stands for the protection core's accuracy class (e.g., 5P or 10P). • The second 'A' often indicates the metering core's accuracy class (e.g., 0.5 or 1.0). Thus, REA 107-AA is highly probable to be a Dual-Core CT with one core for protection and one for measurement. Rated Output (VA) Protection Core: Typically 10 VA or 15 VA at specified accuracy class (e.g., 10P10). Metering Core: Typically 5 VA or 10 VA at specified accuracy class (e.g., 0.5). Accuracy Limit Factor (ALF) For Protection Core (if 5P or 10P): Typically 10 or 15 (e.g., 10P10 means 10% composite error at 10 times rated current). Rated Dynamic Current (Idyn) Typically 2.5 x Ith (Rated short-time thermal current). Rated Short-Time Thermal Current (Ith) Expressed in kA for 1s or 3s. For a CT of this size, could be in the range of 10 - 25 kA for 1s. Rated Insulation Level (kV) Likely 12/24/36 kV (Rated voltage / Power-frequency withstand / Lightning impulse withstand). Common for 7.2kV or 12kV systems. Example: 12/28/75 kV. Window Diameter / Size Determines the maximum size of the primary conductor (busbar) that can pass through. A common size is Ø50mm or 50x100mm (rectangular). Mounting Designed for fixed installation on a panel structure, often with mounting feet or brackets. Ambient Temperature Operating: -5°C to +40°C (up to +55°C with derating) Weight Approx. 3 - 7 kg, depending on size.

Technical Parameters Parameter Category Typical Specification for this Configuration General • Rated Voltage (Ur) 12 kV • Rated Frequency 50 / 60 Hz • Insulation Level 12/32 kV (Power freq./Impulse) • Design Standard IEC 62271-100, ANSI C37.06 Current Ratings • Rated Normal Current (Ir) 1500 A • Rated Short-Circuit Breaking Current (Isc) 25 kA or 31.5 kA (Must verify with drawing 54617997) • Rated Short-Time Withstand Current (Ik) Typically equals Isc for 3s. • Rated Peak Withstand Current (Ip) Typically 2.5 x Isc. Switching Performance • Rated Breaking Capacity Full Isc at Ur. • Mechanical Endurance ≥ 20,000 operations (M2 class) • Electrical Endurance ≥ 10,000 operations at full Ir (E2 class) Operating Mechanism (F) • Type Spring-operated, stored energy. • Charging Motor Electric motor, voltage per drawing 54617997. • Closing Time ~60 – 80 ms • Opening Time ~40 – 60 ms Releases (G included) • Standard Protections Integrated with external protection relay. The breaker has shunt trips and auxiliary switches to interface with it. • Undervoltage Release (G) Trips the breaker upon loss of control power. Voltage per drawing. • Other Possible Releases Overcurrent releases, special locking coils (not indicated in this code). Vacuum Interrupter • Type Axial magnetic field or radial field, for long contact life. • Rated Switching Currents Suitable for transformer, cable, and motor switching. Dimensions & Weight • Width Approx. 600 – 800 mm (depends on panel design) • Weight Approx. 150 – 200 kg

Technical Parameters Parameter Specification System / Standard KNX / EN 50090, ISO/IEC 14543 Bus Voltage 21 – 32 V DC (KNX SELV) Auxiliary Supply (Us) 24 V DC, SELV (±10%) Power Consumption • From KNX Bus: Typically < 10 mA • From Aux. Supply: Depends on relay state; ~20 mA per active relay + quiescent. Channels 2 Binary Inputs + 2 Relay Outputs (Typical interpretation of DACADAN) Binary Inputs • Type: Dry contact (potential-free) or voltage monitor (24V DC). • Function: Configurable as switch, push-button, counter, etc. via ETS software. Relay Outputs • Contact Type: 1 changeover (SPDT) per channel. (NO + NC + COM) • Rated Load (AC-1): 16 A / 250 V AC • Motor Load (AC-3): 10 A / 250 V AC (for squirrel-cage motors) • Inrush Current (Ic): 150 A (for a limited number of cycles). Electrical Life ≥ 100,000 operations at rated load (AC-1) Mechanical Life ≥ 1,000,000 operations Status Indication LED per channel (configurable) + LED for bus & power status. Local Manual Control Yes, via integrated pushbuttons (indicated by suffix E). Mounting 35 mm DIN Rail (EN 60715) Ambient Temperature Operating: -5°C to +45°C Storage: -25°C to +55°C Protection Degree IP20 (for mounting in a distribution board) Configuration Exclusively via ABB ETS (Engineering Tool Software) using a unique device database file. Dimensions (WxHxD) Approx. 8 modules (144 mm) x 90 mm x 65 mm

Parameter Specification Notes / Explanation Series / Type System Pro M - GS Rotary Switch-Disconnector (Special Version) Device Type 3-Pole Load Break Switch-Disconnector with Integrated Low-Current Fuse Standard Compliance IEC/EN 60947-3, IEC/EN 60947-1 Poles 3 Poles (Main Circuit) Main Circuit Ratings • Rated Operational Voltage (Ue) 690 V AC • Rated Insulation Voltage (Ui) 800 V AC • Rated Operational Current (Ie) 63 A (AC-23A) The 251 in GS251S indicates the 63A frame size. Breaking Capacity • Rated Conditional Short-Circuit Current (Icq) Typically 10-15 kA (when backed by specified upstream fuses) Requires backup fuse. Handle (C16) • Type Front-mounted, rotary handle with a large black knob. For manual operation and padlocking. • Locking Can be padlocked in the OFF position (usually 1-2 padlocks). Essential for LOTO. Special Feature (/0.03) Key Feature • Description Integrated low-current fuse holder or protection link for an auxiliary circuit. • Rated Current 0.03 A (30 mA) gG or similar characteristic. • Protected Circuit Type Likely a set of dedicated low-current auxiliary contacts or a separate isolated terminal pair for control/signaling. Purpose is to protect sensitive external control devices. • Physical Form Could be a 5x20mm or similar miniature fuse housed within the switch body or handle assembly. Utilization Category AC-23A (For switching squirrel-cage motors) Mechanical Life ≥ 20,000 operations Electrical Life (AC-23A) ≥ 5,000 operations at full rated current Auxiliary Contacts The S version and /0.03 likely imply the presence of special auxiliary contacts with the low-current fuse in series with one of them. Standard auxiliary blocks may also be addable. Terminals Screw-clamp terminals. Main terminals accept larger cables. Connection Capacity Up to 35 mm² (for main terminals) Mounting Mounts on 35 mm DIN Rail (EN 60715). Protection Degree IP40 (with handle installed) Ambient Temperature Operating: -25°C to +70°C Dimensions (W x H x D) Approx. 80 mm x 135 mm x 120 mm (for 3-pole unit) Weight Approx. 0.7 kg (without fuses)