Parameter Category Specification
Product Family / Type Compact Configurable Multifunction Protection Relay
Standard Compliance IEC 60255, IEC 60947-1
Rated Auxiliary Supply Voltage (Us) 24 - 48 V DC (This is defined by the -11 suffix).
Rated Current Input (In) 1 A AC (This is defined by the -600- in the type code. 600 = 1A; 500 = 5A).
Configurable Functions (via DIP Switch) The relay can be configured as one of the following:
1. Three-phase overcurrent relay (I>)
2. Two-phase overcurrent relay (I>)
3. Single-phase overcurrent relay (I>)
4. Sensitive earth-fault relay (I0>)
5. Three-phase overcurrent + Earth-fault relay (I> + I0>)
Protection Characteristics & Settings
• Operate Value (Pick-up) Phase Fault: Adjustable from 0.2 x In to 1.0 x In via a 10-position DIP switch.
Earth Fault: Adjustable from 0.02 x In to 0.2 x In via a 10-position DIP switch.
• Time Delay Definite Time (DT). Adjustable via a front potentiometer: 0.06 seconds to 3.0 seconds.
• Reset Time Instantaneous (approx. 60 ms).
• Reset Ratio > 95% of the operate value.
Output Contacts
• Trip Relay (K1) 1 Changeover (CO) contact (SPDT).
• Rated Load: 8 A, 250 V AC / 5 A, 30 V DC.
• Signal Relay (K2) 1 Changeover (CO) contact (SPDT).
• Can be configured for Trip Replication or as an independent Pre-alarm.
Binary Input 1 programmable input. Can be assigned as a Remote Reset or Blocking input.
Indications 3 LEDs:
- GREEN (PWR): Power ON.
- YELLOW (ALARM): Pre-alarm or start signal activation.
- RED (TRIP): Protection has operated (trip condition).
Burden < 0.2 VA per current circuit at In.
Typical power consumption: < 3 W.
Isolation 2.5 kV RMS between all circuits (supply, current inputs, output contacts).
Operating Temperature -25°C to +55°C
Storage Temperature -40°C to +85°C
Mounting Standard 35mm DIN Rail (EN 60715).
Housing Material Self-extinguishing thermoplastic (Polyamide PA 6.6), UL94 V-0 rated.
Protection Rating IP40 (front), IP20 (terminal area).
Dimensions (W x H x D) Approx. 70 mm x 122 mm x 116 mm (4 module width = 70mm).
Weight Approx. 0.45 kg.
Certifications CE, cULus, RoHS.
The ABB PSR45-600-11 is a compact, multi-functional, and cost-effective microprocessor-based protection relay belonging to ABB's versatile PSR (Protection, Signaling, and Control) series. It is designed as a universal protection device for a wide range of applications, including feeder protection, motor protection, transformer protection, and general equipment protection in industrial and commercial power distribution systems.