Product Details
Configured for high-density load switching and signal coupling in industrial automation control panels, the Honeywell CRH-2C-DC24V (CRH-2C Power Relay) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CRH-2C-DC24V |
| Brand | Honeywell |
| Origin | USA |
| Weight | 0.03 kg |
| Dimensions | Standard miniature power relay package |
| Operating Temp | -40 to 70 deg C |
| Power Consumption | Nominal coil power ~0.53 W |
| Nominal Coil Voltage | 24 VDC |
| Contact Configuration | DPDT (2 Form C) |
| Contact Rating | 8 A @ 250 VAC / 30 VDC |
| Pin Count | 8 Pins (PCB or socket mount) |
4-20 mA HART Loop Protocol and Channel Isolation
The CRH-2C-DC24V relay incorporates high galvanic isolation between the 24 VDC control coil and the 8 A / 250 VAC output switching contacts. This physical isolation prevents high-voltage inductive switching transients on load circuits from coupling into sensitive 4-20 mA HART loop protocol lines or fieldbus communication channels. The DPDT contact architecture maintains channel-to-channel isolation across both switched poles, ensuring reliable signal segregation between independent process control loops.
Frequently Asked Questions
Q: Can the CRH-2C-DC24V relay be plugged into standard DIN-rail relay sockets?
A: Yes. The 8-pin terminal layout is compatible with matching 8-pin industrial DIN-rail mounting sockets as well as direct PCB soldering.
Q: Is inductive flyback diode suppression built into the internal relay coil?
A: Standard CRH-2C-DC24V units do not contain an internal flywheel diode; external flyback diodes or RC suppressors must be wired across the 24 VDC coil to clamp voltage spikes when driven by PLC digital outputs.
Field Installation Guidelines
- Disconnect all primary power supplies feeding the control cabinet and relay socket before installation.
- Verify that the coil drive voltage matches 24 VDC and observe correct polarity if using socket modules with LED indicators or suppression diodes.
- Align the 8 contact pins with the keyways of the mounting socket and press firmly until the relay fully seats.
- Secure socket retaining clips over the relay body to prevent loosening from cabinet vibration.
- Ensure field load wiring connected to the 8 A / 250 VAC contacts does not exceed specified current limits to avoid contact welding.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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