ABB SPER1C1 Trip Circuit Monitoring Relay

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• 1. Product Overview

  The ABB SPER1C1 Trip Circuit Monitoring Relay is designed to continuously supervise the integrity of circuit breaker trip circuits, including the trip coil, control power supply, wiring, and auxiliary contacts.
  It provides an alarm signal in case of open circuits, power supply failure, or other abnormalities, ensuring that the circuit breaker can trip reliably when required. This relay is a critical safety component in power system protection schemes.

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  2. Technical Specifications

  • Model: SPER1C1

  • Type: Trip Circuit Monitoring Relay

  • Brand: ABB

  • Monitored Circuit: Circuit breaker trip circuit

  • Applicable Trip Circuit Voltage: DC 48 V / 110 V / 220 V (depending on system configuration)

  • Monitoring Method: Continuous online supervision

  • Output Contacts: Alarm relay contacts

  • Contact Arrangement: 1 NO + 1 NC (typical)

  • Rated Contact Voltage: 250 V AC / 220 V DC

  • Rated Contact Current: 5 A

  • Power Consumption: Low power consumption

  • Response Time: Fast response suitable for protection circuits

  • Mounting: Panel-mounted or relay rack-mounted

  • Operating Temperature: -25 to +55 °C

  • Protection Class: IP20

  • Mechanical Life: > 10,000,000 operations

  • Electrical Life: > 100,000 operations

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  3. Key Advantages & Features

  1. Continuous Trip Circuit Supervision
     Detects trip circuit failures in real time.

  2. Enhanced System Safety
     Prevents breaker failure due to trip circuit malfunctions.

  3. High Reliability
     Designed with power-system-grade components for continuous operation.

  4. Clear Alarm Indication
     Relay output allows easy integration with alarm and SCADA systems.

  5. Compatibility with Common DC Systems
     Suitable for standard substation DC control voltages.

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  4. Typical Applications

  • Medium- and high-voltage circuit breaker trip circuits

  • Substation protection and control systems

  • Power plant electrical protection systems

  • Distribution automation systems

  • Industrial power system protection schemes

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  5. Installation & Handling Notes

  1. Confirm the trip circuit voltage matches the relay rating before installation.

  2. Wire the relay strictly according to the approved circuit diagram.

  3. Install in clean, dry control cabinets with minimal vibration.

  4. Periodically test alarm outputs and monitoring functions.

  5. Disconnect control power before maintenance or replacement.

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The structure and details of the product：

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