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- Honeywell
- RA890G1245
- Protection Relay
- USA
- 127 x 127 x 122 mm
- 1.81 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Honeywell RA890G1245 Protectorelay™ is an industrial primary safety control relay designed for use in burner management systems, flame safeguard systems, and combustion control applications.
It is commonly used as a flame safeguard and safety switching relay, ensuring safe operation of burners by monitoring flame presence and controlling ignition and fuel supply circuits. When flame failure or unsafe conditions are detected, the relay initiates a rapid shutdown (lockout) to protect equipment and personnel.
This device is part of Honeywell’s RA890G series primary control relays, widely used in HVAC, industrial boilers, and combustion systems.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | RA890G1245 |
| Product Type | Protection / Flame Safeguard Relay |
| Series | RA890G Protectorelay™ |
| Voltage Rating | 220–240 VAC (model dependent) |
| Frequency | 50/60 Hz |
| Relay Contact Type | SPDT (Single Pole Double Throw) |
| Flame Failure Response Time | ~0.8 seconds |
| Safety Switch Timing | Typically 15 seconds (lockout timing) |
| Function | Flame detection and burner safety control |
| Reset Type | Manual or system reset (configuration dependent) |
| Mounting Type | Subbase / panel mounted |
| Operating Environment | Industrial burner control systems |
| Operating Temperature | Industrial-rated (typical -20°C to +60°C range) |
| Dimensions | 127 × 127 × 122 mm |
| Weight | 1.81 kg |
Function and Working Principle
The RA890G1245 functions as a safety interlock and flame monitoring relay.
It is responsible for:
- Monitoring flame presence in combustion systems
- Controlling ignition and fuel supply circuits
- Allowing burner operation only under safe flame conditions
- Initiating shutdown when flame failure is detected
- Providing timed safety switching and lockout protection
- Ensuring compliance with combustion safety standards
If flame is lost or unsafe conditions occur, the relay quickly transitions into protective lockout mode.
System Role in Architecture
The Honeywell RA890G1245 operates as a primary safety control element in burner management systems.
It is typically used in:
- Industrial boiler control systems
- Gas burner safety management systems
- HVAC combustion control systems
- Furnace ignition safety circuits
- Process heating systems
It acts as the critical safety layer between flame detection devices and fuel control systems.
Industrial Applications
- Industrial boilers
- Power plant combustion systems
- Petrochemical heating systems
- HVAC burner systems
- Process furnaces and heaters
- Industrial gas-fired equipment
Installation & Integration
Proper installation is essential for safe operation:
- Mounted on Honeywell compatible wiring subbase
- Integrated into burner management control panel
- Connected to flame detectors and ignition circuits
- Requires correct voltage and grounding configuration
- Installed by qualified combustion control technicians
- Commissioned according to burner safety standards
Compatible Components
- Honeywell flame detectors (UV / IR sensors)
- Burner ignition transformers
- Fuel valve actuators
- Honeywell burner management systems
- Q-series mounting subbases
- Safety interlock circuits
Recommended Alternative Models
| Model | Type | Application |
|---|---|---|
| RA890G1229 | Lower voltage variant | Standard 120 VAC systems |
| RA890G1260 | Extended timing variant | Delayed shutdown systems |
| RM7890 series | Modern burner control | Advanced burner management |
| EC/RM series controllers | Upgraded safety systems | Integrated combustion control |
| Safety PLC systems | Digital replacement | Modern automation upgrades |
Key Advantages
- Fast flame failure response (high safety performance)
- Proven burner management reliability
- SPDT safety relay output design
- Stable operation in industrial environments
- Compatible with legacy and modern burner systems
- Strong safety interlock functionality
- Suitable for continuous combustion applications
FAQs
Q1: What is the main function of the RA890G1245?
It provides flame supervision and safety shutdown control in burner systems.
Q2: Where is it used?
In boilers, furnaces, and industrial combustion systems.
Q3: What happens during flame failure?
It triggers a fast safety shutdown (lockout mode).
Q4: Is it programmable?
No, it is a fixed-function safety relay device.
Q5: What is its key role?
Ensuring safe operation of fuel-fired equipment.
Conclusion
The Honeywell RA890G1245 Protection Relay is a critical safety component in combustion and burner management systems. It ensures reliable flame supervision, fast failure response, and safe shutdown capability, making it essential for industrial heating and combustion safety applications.