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Robertshaw 2374-502 conduit pressure switch stainless steel box with screw terminals

Robertshaw

Robertshaw 2374-502 Conduit Pressure Switch .05-12.0

SKU CH-BGH6-M2W1F

Air pressure switch with conduit housing for HVAC and air filtration systems, adjustable from 0.05 to 12.0 inches water column

  • TypeCable Ties
  • Length6.700
  • Precise pressure control from 0.05 to 12.0 in wc
  • SPDT contact handles 5 A at 120–277 V AC or 28 V DC
  • Stainless-steel conduit box protects switch in harsh HVAC environments
  • Includes adjustment tool and mounting hardware for fast installation
  • Suits air filtration, furnace control and humidity management systems

Robertshaw 2374-502 Pressure Switch

The Robertshaw 2374-502 is a conduit-box pressure switch designed for air-filtration, furnace-control and humidity-detection circuits in commercial and residential HVAC systems. It provides SPDT contact action with a field-adjustable range of .05 to 12.0 in wc and includes the adjustment tool and mounting hardware.

Sustained-load behaviour

Rated for 5 A at 120 to 277 V AC and 5 A at 28 V DC, the switch handles continuous pilot-duty loads of 1 A at 120 VA without derating. The maximum differential setting of .8 in wc remains stable across the operating voltage range of 120 V AC, 277 V AC and 28 V DC.

Build quality and connections

A stainless-steel conduit enclosure protects the mechanism from moisture and debris in duct-mounted installations. Screw-terminal wiring ensures secure, vibration-resistant connections for permanent HVAC control panels. The switch is not suited for applications requiring higher current ratings or non-conduit mounting styles.

Highlights

  • Precise pressure control from 0.05 to 12.0 in wc
  • SPDT contact handles 5 A at 120–277 V AC or 28 V DC
  • Stainless-steel conduit box protects switch in harsh HVAC environments
  • Includes adjustment tool and mounting hardware for fast installation
  • Suits air filtration, furnace control and humidity management systems

Specifications

BrandROBERTSHAW
TypeCable Ties
Length6.700

Questions about this item

How much power does the Robertshaw 2374-502 draw when it runs continuously in an HVAC system?

The switch itself consumes negligible power; its contacts are rated for 5 A at 120 to 277 V AC and 5 A at 28 V DC, plus 1 A pilot duty at 120 VA.

What wiring and mounting items must I already have to install this pressure switch?

You need screw-terminal compatible wire, a 120 V AC, 277 V AC or 28 V DC supply, and a surface to mount the stainless-steel conduit box; the included adjustment tool and mounting hardware cover the rest.

Will the 0.8 in wc differential setting work with my older furnace controller?

Yes, the SPDT contacts and the 0.8 in wc maximum differential are compatible with legacy controllers that accept a dry-contact pressure signal at the listed voltage ratings.

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