Technical Parameters
Parameter Category Specification
Product Family / Type Compact, Configurable Multifunction Protection Relay
Standard Compliance IEC 60255, IEC 60947-1, -5-1
Rated Auxiliary Supply (Us) 48 - 250 V DC / 48 - 240 V AC, 50/60 Hz (Auto-ranging, defined by suffix -70)
Rated Current Input (In) 1 A AC (Defined by -600-. -500- indicates 5 A).
Configurable Functions (via DIP Switch) Selectable as one of:
1. 3-phase overcurrent (I>)
2. 2-phase overcurrent (I>)
3. 1-phase overcurrent (I>)
4. Sensitive earth-fault (I0>)
5. 3-phase OC + Earth-fault (I> + I0>)
Protection Characteristics
• Operate Value (Pick-up) Phase: 0.2 x In to 1.0 x In (10 steps via DIP)
Earth: 0.02 x In to 0.2 x In (10 steps via DIP)
• Time Delay Definite Time (DT) only. Adjustable via potentiometer: 0.06 s to 3.0 s.
• Reset Time ~60 ms (Instantaneous).
• Reset Ratio > 95% of operate value.
• Operate Time Tolerance ±5% of set value or ±30 ms.
Output Contacts
• Trip Relay (K1) 1 Changeover (CO) contact (SPDT).
Rating: 8 A at 250 V AC (AC-15) / 5 A at 30 V DC (DC-13).
• Signal Relay (K2) 1 Changeover (CO) contact (SPDT).
Configurable for trip replication or as an independent pre-alarm.
Binary Input 1 programmable input for Remote Reset or Blocking function.
Indications 3 LEDs:
• GREEN (PWR): Supply healthy.
• YELLOW (ALARM): Pre-alarm / Start signal active.
• RED (TRIP): Protection operated.
Burden & Consumption < 0.2 VA per current circuit at In.
Typical power: < 3 W.
Isolation 2.5 kV RMS (50 Hz, 1 min) between all circuits: supply, current inputs, outputs.
Environmental
• Operating Temperature -25°C to +55°C
• Storage Temperature -40°C to +85°C
• Relative Humidity ≤ 93% (non-condensing)
Mechanical
• Mounting Standard 35 mm DIN Rail (EN 60715).
• Housing Material Self-extinguishing thermoplastic (Polyamide PA 6.6), UL94 V-0.
• Protection Rating IP40 (front), IP20 (terminals).
• Dimensions (W x H x D) 70 mm x 122 mm x 116 mm (4 module width).
• Weight ~0.45 kg.
Certifications CE, cULus, RoHS, EAC.
The ABB PSR45-600-70 is a compact, versatile, and economically optimized configurable protection relay from ABB's PSR (Protection, Signaling, and Control) series. It functions as a universal, hardware-configured protective device designed for the essential protection of electrical feeders, motors, transformers, and other equipment in industrial and commercial power distribution networks.