Description
Product Description
HONEYWELL GR-4C-AC230V is a compact 4-contact intermediate relay engineered for industrial automation signal switching, isolation, and amplification, ideal for PLC/DCS control systems and process monitoring setups. HONEYWELL GR-4C-AC230V operates on 230VAC control voltage, featuring 4 changeover (4CO) silver alloy contacts rated at 5A, ensuring reliable switching of low to medium-power circuits. HONEYWELL GR-4C-AC230V comes with an integrated LED status indicator, mechanical indicator window, and test button for quick troubleshooting and operational verification. HONEYWELL GR-4C-AC230V uses an insert – type mounting design with 28×21.5mm dimensions and 35g weight, enabling space – saving integration with standard relay sockets like PGR – 4C – E. HONEYWELL GR-4C-AC230V offers a wide operating temperature range of -55°C to 70°C, suitable for harsh industrial environments with vibration (10–55Hz, 1mm double amplitude) and 30–85% RH humidity. HONEYWELL GR-4C-AC230V is RoHS – compliant and UL – recognized, delivering consistent performance for signal conditioning in manufacturing, energy, and building automation applications.
Product Parameters
| Parameter | Details |
|---|---|
| Module Type | 4 – Contact Intermediate Relay (HONEYWELL GR-4C-AC230V) |
| Core Function | Signal switching, isolation, amplification; circuit control for industrial automation systems |
| Control Voltage | 230VAC |
| Contact Configuration | 4 changeover (4CO) |
| Contact Material | Silver alloy |
| Contact Rating | 5A (max load) |
| Contact Resistance | ≤100mΩ (1A 6VDC) |
| Operating Temperature | -55°C to 70°C |
| Vibration Resistance | 10–55Hz, 1mm double amplitude |
| Humidity Range | 30–85% RH |
| Mounting Style | Insert – type (compatible with PGR – 4C – E socket) |
| Dimensions | 28×21.5mm |
| Weight | Approx. 35g |
| Status Indicators | LED indicator + mechanical indicator window |
| Compliance | RoHS, UL recognized |
Advantages and Features
- Compact & High – Density Design: HONEYWELL GR-4C-AC230V’s small form factor maximizes panel space utilization, fitting multiple units in control cabinets for complex signal routing.
- Dual Indication & Testing: Built – in LED and mechanical indicator + test button enable rapid fault detection without extra tools, reducing downtime.
- Rugged Industrial Durability: Withstands extreme temperatures, vibration, and humidity, ensuring stable operation in harsh industrial conditions.
- Secure Contact Performance: Silver alloy 4CO contacts provide low resistance and long service life for frequent switching cycles.
- Plug – and – Play Integration: Insert – type mounting and socket compatibility simplify installation and replacement, cutting maintenance time.
- Global Compliance: RoHS and UL certifications ensure compatibility with international industrial standards.
Application Cases in Application Fields
- Automotive Assembly Line: HONEYWELL GR-4C-AC230V isolated and amplified sensor signals for robotic arm control, supporting 24/7 operation with 99.8% uptime and reducing signal interference – related errors by 32%.
- Power Plant Auxiliary Control: It switched pump and valve control circuits in a thermal power plant, using 230VAC compatibility to integrate with existing AC control systems and withstand high – vibration generator rooms.
- Chemical Plant Process Monitoring: HONEYWELL GR-4C-AC230V converted low – level PLC output signals to drive 5A actuator circuits, ensuring safe signal isolation between hazardous and non – hazardous zones.
- Building Automation HVAC Systems: It controlled fan and damper motors, leveraging the LED indicator for remote status checks and the compact design for fitting in crowded electrical panels.
Comparisons with Competing Products
| Parameter | HONEYWELL GR-4C-AC230V | Siemens 3RT2016 – 1BB41 | ABB CR – M024DC005 |
|---|---|---|---|
| Module Type | 4CO intermediate relay | 3 – pole contactor – relay | 2CO miniature relay |
| Control Voltage | 230VAC | 24VAC/DC | 24VDC |
| Contact Configuration | 4CO | 3NO | 2CO |
| Contact Rating | 5A | 16A | 5A |
| Indication | LED + mechanical window | LED only | LED only |
| Mounting | Insert – type | DIN rail | DIN rail |
| Operating Temp | -55°C to 70°C | -25°C to 70°C | -40°C to 60°C |
| Compliance | RoHS, UL | IEC, CE | IEC, CE |
Selection Suggestions and Precautions
Selection Suggestions
- Opt for HONEYWELL GR-4C-AC230V for 230VAC – based systems needing 4CO signal isolation/switching, dual indication, and harsh – environment durability.
- Prefer it for manufacturing, power, and chemical applications where space – saving design and easy troubleshooting are essential.
Precautions
- Match the load to the 5A contact rating of HONEYWELL GR-4C-AC230V to avoid contact damage or overheating.
- Use only compatible PGR – 4C – E sockets for secure insert – type mounting and proper electrical connections.
- Keep operation within -55°C to 70°C and 30–85% RH to maintain relay performance and longevity.
- Avoid exceeding vibration limits (10–55Hz, 1mm double amplitude) to prevent contact misalignment or loose connections.
- Verify RoHS/UL compliance alignment with local industrial safety standards before deployment.

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PLC : Allen Bradley , Siemens MOORE, GE FANUC , Schneider
DCS : ABB ,Honeywell, Invensys Triconex , Foxboro , Ovation,YOKOGAWA, Woodword, HIMA
TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
Payment: T/T
Delivery: 1-2 days
Shipment: DHL UPS FedEx, etc
After-sales service: Yes, 24/7 hours
Email: sales@plcfcs.com
Phone:+86 15343416922
Wechat:+86 15343416922
PLC : Allen Bradley , Siemens MOORE, GE FANUC , Schneider
DCS : ABB ,Honeywell, Invensys Triconex , Foxboro , Ovation,YOKOGAWA, Woodword, HIMA
TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
Payment: T/T
Delivery: 1-2 days
Shipment: DHL UPS FedEx, etc
After-sales service: Yes, 24/7 hours




Email: jiedong@sxrszdh.com
Phone / Wechat:+86 15340683922
Wechat:+86 15343416922