Description
Product Overview
The ABB 07KR51 is a high-power, relay-based digital output module designed for the ABB 5000 Series I/O system, specifically configured with a 220V DC output rating. This module provides a robust and isolated interface for driving demanding industrial loads directly from the control system, such as large contactors, solenoid valves, motor starters, and indicator lamps. It serves as a critical intermediary, offering galvanic separation between the sensitive control electronics and high-power DC circuits. The ABB 07KR51 is engineered for maximum reliability in harsh environments, featuring durable electromechanical relays capable of switching inductive loads with high inrush currents. Its design prioritizes safety, diagnostic clarity, and ease of maintenance, making it an essential component for executing critical on/off commands in heavy industrial automation and process control applications.
| Parameter Values | |
|---|---|
| Product Model: | ABB 07KR51 (220VDC) |
| Brand: | ABB |
| Warranty: | 12 Months |
| Output Type: | Electromechanical Relay, Form A (SPST-NO) |
| Output Rating per Channel: | 220 V DC, 2 A (Resistive Load) |
| Max. Switching Power: | 440 W per channel |
| Operating Temperature: | -20°C to +60°C |
| Mechanical Endurance: | 10 million operations (minimum) |
| Electrical Endurance: | 100,000 operations at rated load |
| Response Time (Operate): | < 15 ms |
| Isolation: | 2000 V AC (channel-to-channel and channel-to-backplane) |
| Number of Channels: | 8 |
| Connection Type: | Heavy-duty screw terminal block |
| Status Indication: | Per-channel LED (ON/OFF) and relay flag indicator |
| Backplane Current Consumption: | 180 mA typical |
| Contact Material: | Silver Alloy |
| Dimensions: | 60 mm x 130 mm x 120 mm (H x W x D) |
Application Scenarios
- Power Distribution & Switchgear: Controlling circuit breakers, disconnectors, and interlocking mechanisms in electrical substations and switchgear assemblies where 220V DC control power is standard.
- Heavy Machinery & Mining: Actuating high-power hydraulic solenoids, brake releases, and conveyor drives on mining excavators, draglines, and bulk material handling systems.
- Process Shutdown Systems: Executing final element commands for emergency shutdown (ESD) valves and critical motor-driven equipment in oil & gas and chemical plants, where a reliable 220V DC supply ensures operation during power disturbances.
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