
Velocity Boiler Works (Crown) 3503025 Relay
The Velocity Boiler Works (Crown) 3503025 Relay is a high-duty 120V combination relay engineered for precise circuit management in residential and commercial hydronic systems. As a critical boiler replacement part, this component integrates multiple switching functions into a single housing, streamlining the 120VAC electrical path for burners, pumps, and limit controls. Designed specifically for Crown boiler systems, it ensures 60Hz current stability and helps prevent premature component failure by managing heating cycles with high-accuracy logic. Replacing a flickering or chattering HVAC combination relay with this OEM-spec unit restores the system's ability to respond to thermostat calls and safety limit triggers without signal degradation.
For veteran technicians, the 3503025 offers a compact relay design that simplifies integration into existing control cabinets. Its robust construction is rated for the high-temperature environments typical of boiler vestibules, providing dependable electrical circuit protection against the wear of frequent cycling. This 120V relay effectively bridges the gap between low-voltage controls and high-voltage loads, ensuring your client's equipment operates at peak efficiency while maintaining the integrity of the boiler’s safety string.
Key Benefits:- OEM Compatibility: Specifically calibrated for Velocity Boiler Works and Crown boiler control modules.
- Multifunctional Logic: Functions as a 120V combination relay to handle both pump and burner circuit switching.
- Enhanced Durability: Engineered with high-grade materials to withstand the thermal stress of industrial heating applications.
- Space-Efficient Housing: The 3503025 boiler part features a compact footprint for easier wiring in tight control panels.
- Reliable Circuit Control: Maintains consistent electrical contact and prevents signal jitter in complex HVACR setups.
What are the symptoms of a failing 3503025 relay?
Technicians often report chattering sounds, a burner that fails to fire despite a call for heat, or a secondary circulator pump that won't engage. If you measure 120V at the input but see no output during a call, the internal contacts are likely pitted or fused.
Can this relay be used in non-Crown systems?
While the 3503025 is an OEM Crown boiler relay, it can technically be used in other 120V applications if the amperage ratings and pin configurations align with the wiring diagram; however, it is best practice to use it as a direct replacement for the original part number.
Is this a plug-and-play component?
Standard replacement involves matching the existing terminal leads. Always verify the 120V combination relay wiring diagram against the system's schematics to ensure the safety limits are properly sequenced before restoration of power.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $202.95
-65%$202.95
$71.03Velocity Boiler Works (Crown) 3503025 Relay
The Velocity Boiler Works (Crown) 3503025 Relay is a high-duty 120V combination relay engineered for precise circuit management in residential and commercial hydronic systems. As a critical boiler replacement part, this component integrates multiple switching functions into a single housing, streamlining the 120VAC electrical path for burners, pumps, and limit controls. Designed specifically for Crown boiler systems, it ensures 60Hz current stability and helps prevent premature component failure by managing heating cycles with high-accuracy logic. Replacing a flickering or chattering HVAC combination relay with this OEM-spec unit restores the system's ability to respond to thermostat calls and safety limit triggers without signal degradation.
For veteran technicians, the 3503025 offers a compact relay design that simplifies integration into existing control cabinets. Its robust construction is rated for the high-temperature environments typical of boiler vestibules, providing dependable electrical circuit protection against the wear of frequent cycling. This 120V relay effectively bridges the gap between low-voltage controls and high-voltage loads, ensuring your client's equipment operates at peak efficiency while maintaining the integrity of the boiler’s safety string.
Key Benefits:- OEM Compatibility: Specifically calibrated for Velocity Boiler Works and Crown boiler control modules.
- Multifunctional Logic: Functions as a 120V combination relay to handle both pump and burner circuit switching.
- Enhanced Durability: Engineered with high-grade materials to withstand the thermal stress of industrial heating applications.
- Space-Efficient Housing: The 3503025 boiler part features a compact footprint for easier wiring in tight control panels.
- Reliable Circuit Control: Maintains consistent electrical contact and prevents signal jitter in complex HVACR setups.
What are the symptoms of a failing 3503025 relay?
Technicians often report chattering sounds, a burner that fails to fire despite a call for heat, or a secondary circulator pump that won't engage. If you measure 120V at the input but see no output during a call, the internal contacts are likely pitted or fused.
Can this relay be used in non-Crown systems?
While the 3503025 is an OEM Crown boiler relay, it can technically be used in other 120V applications if the amperage ratings and pin configurations align with the wiring diagram; however, it is best practice to use it as a direct replacement for the original part number.
Is this a plug-and-play component?
Standard replacement involves matching the existing terminal leads. Always verify the 120V combination relay wiring diagram against the system's schematics to ensure the safety limits are properly sequenced before restoration of power.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Velocity Boiler Works (Crown) 3503025 Relay is a high-duty 120V combination relay engineered for precise circuit management in residential and commercial hydronic systems. As a critical boiler replacement part, this component integrates multiple switching functions into a single housing, streamlining the 120VAC electrical path for burners, pumps, and limit controls. Designed specifically for Crown boiler systems, it ensures 60Hz current stability and helps prevent premature component failure by managing heating cycles with high-accuracy logic. Replacing a flickering or chattering HVAC combination relay with this OEM-spec unit restores the system's ability to respond to thermostat calls and safety limit triggers without signal degradation.
For veteran technicians, the 3503025 offers a compact relay design that simplifies integration into existing control cabinets. Its robust construction is rated for the high-temperature environments typical of boiler vestibules, providing dependable electrical circuit protection against the wear of frequent cycling. This 120V relay effectively bridges the gap between low-voltage controls and high-voltage loads, ensuring your client's equipment operates at peak efficiency while maintaining the integrity of the boiler’s safety string.
Key Benefits:- OEM Compatibility: Specifically calibrated for Velocity Boiler Works and Crown boiler control modules.
- Multifunctional Logic: Functions as a 120V combination relay to handle both pump and burner circuit switching.
- Enhanced Durability: Engineered with high-grade materials to withstand the thermal stress of industrial heating applications.
- Space-Efficient Housing: The 3503025 boiler part features a compact footprint for easier wiring in tight control panels.
- Reliable Circuit Control: Maintains consistent electrical contact and prevents signal jitter in complex HVACR setups.
What are the symptoms of a failing 3503025 relay?
Technicians often report chattering sounds, a burner that fails to fire despite a call for heat, or a secondary circulator pump that won't engage. If you measure 120V at the input but see no output during a call, the internal contacts are likely pitted or fused.
Can this relay be used in non-Crown systems?
While the 3503025 is an OEM Crown boiler relay, it can technically be used in other 120V applications if the amperage ratings and pin configurations align with the wiring diagram; however, it is best practice to use it as a direct replacement for the original part number.
Is this a plug-and-play component?
Standard replacement involves matching the existing terminal leads. Always verify the 120V combination relay wiring diagram against the system's schematics to ensure the safety limits are properly sequenced before restoration of power.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












