1SVR740760R0400 – CM-SFS.21P Current monitoring relay ABB Voltage Monitoring Relays
24-240V AC, measuring 3-30 mA, 10-100 mA and 0.1-1 A The CM-SFS.21P is a single-functional current monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 24 – 240 V AC / DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC currents with 3 measuring ranges: 3-30 mA, 10-100 mA and 0.1-1 A. The CM-SFS.21P offers window (over- and undercurrent) monitoring as well as selection of ON- or OFF-delay, open- or closed-circuit operating principle, with or without latching function. The output contacts can be configured as 1×2 c/o (SPDT) (common signal) or 2×1 c/o (SPDT) (separate signal for minimum and maximum thresholds) operation. The hysteresis is fixed at 5 % of the threshold value. The tripping delay and the start-up delay are adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals. 1SVR740760R0400 – CM-SFS.21P Current monitoring relay ABB Voltage Monitoring Relays is a genuine ABB electrical component designed for industrial automation, motor control, and power distribution
Technical Specifications
- Rated Voltage: 240V
- Control Supply Voltage: 24 … 240
- Measuring Range: 0.1 … 1|10 … 100|3 … 30
- GTIN: 4016779852371.0
- Brand: ABB, ABB Group, ABB Limited
- Series: CM-SFS
- Part Number: 1SVR740760R0400
- Rated Current: 30 mA
- IP Rating: IP20|IP50
- Pollution Degree: 3.0
- Ambient Air Temperature: '-40 … +85|'-20 … +60
- Power Loss: 2
Key Features
- Part of the ABB CM-SFS range
- 24 … 240 control supply voltage
- 240V rated voltage
- 0.1 … 1|10 … 100|3 … 30 measuring range
- Includes ABB GTIN identification for product traceability
Applications
- Automation control systems
- Machine control circuits
- Industrial relay applications
- Panel building projects
Downloads & Product Resources
Datasheet | ABB Product Page | Declaration of Conformity | RoHS Declaration | Dimension Drawings
Browse Related Categories
Voltage Monitoring Relays | Timers and Control Relays | Modular Protection Relays





