Overview
Configured for electrical switching of control signals in industrial control cabinet circuits within ABB CR-M relay systems, the ABB CR-M125DC4L 1SVR405613R8300, also cataloged as the CR-M125DC4L relay module, provides direct electromechanical execution of low-power load switching through plug-in relay architecture. The module interfaces coil excitation and contact output paths to enable controlled signal isolation and switching logic separation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CR-M125DC4L 1SVR405613R8300 |
| Brand | ABB |
| Origin | Switzerland / EU production network |
| Weight | Approx. 30 g (relay plug-in module) |
| Dimensions | 27.5 mm width standard CR-M socket format |
| Operating Temp | -40 to +70 deg C (typical relay series range) |
| Power Consumption | 1.2 W coil rated consumption (125 VDC coil class) |
| Coil Voltage | 125 VDC |
| Contact Configuration | 4 changeover contacts (4CO) |
| Mounting Type | Plug-in socket relay system |
| Insulation | Reinforced coil-to-contact isolation |
ABB CR-M Relay Switching Architecture
The CR-M125DC4L operates inside ABB CR-M modular relay infrastructure as a multi-contact interface element for discrete signal switching. It translates coil energization into mechanical contact state transitions, enabling deterministic ON/OFF control of downstream circuits.
Moreover, ABB CR-M relay systems implement standardized socket-based mounting, which ensures consistent mechanical alignment and stable contact engagement across repeated insertion cycles. The relay maintains defined coil-to-contact isolation, which separates control-side excitation from load-side switching paths.
In addition, the 4 changeover contact structure allows parallel routing of multiple independent logic paths. This supports compact signal distribution inside control cabinets without requiring separate relay banks for each switching channel.
Frequently Asked Questions (FAQ)
Q: Can the CR-M125DC4L be replaced while the socket remains energized?
A: No. The relay does not support hot-swap under energized coil conditions. Coil power must be removed before extraction to prevent contact arcing.
Q: Does the relay introduce measurable switching delay?
A: Yes. Mechanical actuation introduces millisecond-level switching time determined by coil voltage rise and mechanical movement dynamics.
Q: Can the 4CO contacts operate independently?
A: Yes. Each changeover contact set operates mechanically linked but electrically isolated from the coil circuit.
Field Installation Guidelines
Install the CR-M125DC4L into a compatible ABB CR-M socket with correct alignment of the plug-in terminals. First ensure coil supply is fully de-energized before insertion to avoid unintended actuation.
Next, verify that the socket locking mechanism is fully engaged. This ensures stable mechanical retention under vibration conditions inside the control cabinet.
Maintain separation between coil control wiring and high-load switching conductors. This reduces electromagnetic coupling between control and output paths.
Ensure protective grounding of the control cabinet is continuous and bonded to system earth reference. This improves noise immunity for coil switching circuits.
Finally, perform a functional test by energizing the coil and verifying correct transition across all changeover contact outputs.
ABB Top Products
Customers Also Viewed
Contact: Manski Wong +86 18030205725 manski@cambia.cn
Reviews
There are no reviews yet.