Fulton Boiler 2-40-000421 Relay
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Fulton Boiler 2-40-000421 Relay

Fulton Boiler 2-40-000421 Relay

The Fulton Boiler 2-40-000421 Low Water Safety Relay is a critical OEM component designed for high-precision boiler water level monitoring. Also identified as part number 2-40-004-21, this 10-pin low water cutoff relay serves as a primary safety interface, ensuring the burner circuit is interrupted immediately upon detection of a low water condition. Operating on a 120VAC 50/60Hz supply with a low power consumption of 4.4VA, it provides a robust 10-amp load rating suitable for heavy-duty industrial and commercial applications. This relay is engineered to integrate seamlessly with Fulton steam boilers and thermal fluid heaters, preventing catastrophic pressure vessel failure. Its plug-in architecture allows for rapid field replacement, minimizing downtime during critical boiler maintenance. By maintaining tight electrical tolerances, this relay ensures reliable signal processing for industrial heating safety systems across residential, commercial, and process-heavy environments.

Key Benefits:
  • OEM Compatibility: Precision-engineered for Fulton Boiler 2-40-000421 and 2-40-004-21 specifications to ensure direct drop-in replacement.
  • Enhanced Safety Logic: Provides fail-safe protection by triggering an automatic shutoff during low water events to protect the heat exchanger.
  • Industrial Build Quality: Features a high 10-amp contact rating and 10-pin electrical connection for stable performance in high-vibration environments.
  • Energy-Efficient Operation: Maximizes system uptime with a minimal 4.4VA draw, reducing electrical overhead in control panels.
  • Versatile Application: Suitable for both high-pressure steam and hot water systems requiring rigorous boiler protection standards.
Common Questions:

Is the Fulton 2-40-000421 compatible with older 10-pin bases?
Yes, as an authentic Fulton OEM replacement, this relay is designed to fit standard 10-pin sockets used in legacy and modern boiler control interfaces.

Can this relay be used for both 50Hz and 60Hz systems?
The Fulton Boiler 2-40-000421 Low Water Safety Relay is rated for 120VAC at both 50Hz and 60Hz, making it suitable for a wide range of regional power requirements.

What is the difference between part number 2-40-000421 and 2-40-004-21?
These part numbers refer to the same Fulton low water safety relay; they are identical components used across different technical documentation formats.

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.

$135.30

Original: $386.57

-65%
Fulton Boiler 2-40-000421 Relay

$386.57

$135.30

Fulton Boiler 2-40-000421 Relay

The Fulton Boiler 2-40-000421 Low Water Safety Relay is a critical OEM component designed for high-precision boiler water level monitoring. Also identified as part number 2-40-004-21, this 10-pin low water cutoff relay serves as a primary safety interface, ensuring the burner circuit is interrupted immediately upon detection of a low water condition. Operating on a 120VAC 50/60Hz supply with a low power consumption of 4.4VA, it provides a robust 10-amp load rating suitable for heavy-duty industrial and commercial applications. This relay is engineered to integrate seamlessly with Fulton steam boilers and thermal fluid heaters, preventing catastrophic pressure vessel failure. Its plug-in architecture allows for rapid field replacement, minimizing downtime during critical boiler maintenance. By maintaining tight electrical tolerances, this relay ensures reliable signal processing for industrial heating safety systems across residential, commercial, and process-heavy environments.

Key Benefits:
  • OEM Compatibility: Precision-engineered for Fulton Boiler 2-40-000421 and 2-40-004-21 specifications to ensure direct drop-in replacement.
  • Enhanced Safety Logic: Provides fail-safe protection by triggering an automatic shutoff during low water events to protect the heat exchanger.
  • Industrial Build Quality: Features a high 10-amp contact rating and 10-pin electrical connection for stable performance in high-vibration environments.
  • Energy-Efficient Operation: Maximizes system uptime with a minimal 4.4VA draw, reducing electrical overhead in control panels.
  • Versatile Application: Suitable for both high-pressure steam and hot water systems requiring rigorous boiler protection standards.
Common Questions:

Is the Fulton 2-40-000421 compatible with older 10-pin bases?
Yes, as an authentic Fulton OEM replacement, this relay is designed to fit standard 10-pin sockets used in legacy and modern boiler control interfaces.

Can this relay be used for both 50Hz and 60Hz systems?
The Fulton Boiler 2-40-000421 Low Water Safety Relay is rated for 120VAC at both 50Hz and 60Hz, making it suitable for a wide range of regional power requirements.

What is the difference between part number 2-40-000421 and 2-40-004-21?
These part numbers refer to the same Fulton low water safety relay; they are identical components used across different technical documentation formats.

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.

Product Information

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Description

The Fulton Boiler 2-40-000421 Low Water Safety Relay is a critical OEM component designed for high-precision boiler water level monitoring. Also identified as part number 2-40-004-21, this 10-pin low water cutoff relay serves as a primary safety interface, ensuring the burner circuit is interrupted immediately upon detection of a low water condition. Operating on a 120VAC 50/60Hz supply with a low power consumption of 4.4VA, it provides a robust 10-amp load rating suitable for heavy-duty industrial and commercial applications. This relay is engineered to integrate seamlessly with Fulton steam boilers and thermal fluid heaters, preventing catastrophic pressure vessel failure. Its plug-in architecture allows for rapid field replacement, minimizing downtime during critical boiler maintenance. By maintaining tight electrical tolerances, this relay ensures reliable signal processing for industrial heating safety systems across residential, commercial, and process-heavy environments.

Key Benefits:
  • OEM Compatibility: Precision-engineered for Fulton Boiler 2-40-000421 and 2-40-004-21 specifications to ensure direct drop-in replacement.
  • Enhanced Safety Logic: Provides fail-safe protection by triggering an automatic shutoff during low water events to protect the heat exchanger.
  • Industrial Build Quality: Features a high 10-amp contact rating and 10-pin electrical connection for stable performance in high-vibration environments.
  • Energy-Efficient Operation: Maximizes system uptime with a minimal 4.4VA draw, reducing electrical overhead in control panels.
  • Versatile Application: Suitable for both high-pressure steam and hot water systems requiring rigorous boiler protection standards.
Common Questions:

Is the Fulton 2-40-000421 compatible with older 10-pin bases?
Yes, as an authentic Fulton OEM replacement, this relay is designed to fit standard 10-pin sockets used in legacy and modern boiler control interfaces.

Can this relay be used for both 50Hz and 60Hz systems?
The Fulton Boiler 2-40-000421 Low Water Safety Relay is rated for 120VAC at both 50Hz and 60Hz, making it suitable for a wide range of regional power requirements.

What is the difference between part number 2-40-000421 and 2-40-004-21?
These part numbers refer to the same Fulton low water safety relay; they are identical components used across different technical documentation formats.

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.