L404A1370 | Honeywell Pressure Switch Pressuretrol 5-50PSI

Honeywell · Relays, Contactors & Switches

L404A1370 | Honeywell Pressure Switch Pressuretrol 5-50PSI

Description  The Honeywell L404A1370 is a diaphragm-actuated pressure switch designed to monitor and control pressure levels in steam, air, and non-corrosive gas systems. With a 5–50 PSI range, it provides precise regulation and switching for heating and process applications.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Sensors & Switches Part Number L404A1370 Subcategory Pressure Switch Series L404A Pressure Range 5–50 PSI Differential (mid-scale) Approx. 6–12 PSI Switch Type SPST (Snap-Acting) Pressure Sensing Element Stainless Steel Diaphragm Electrical Rating (120V AC) 8.0 A (Full Load), 4.0 A (Locked Rotor) Electrical Rating (240V AC) 5.1 A (Full Load), 3.6 A (Locked Rotor) Electrical Rating (DC) 2.4 A (120V), 1.2 A (240V) Mounting ¼" NPT or Surface Mount Ambient Temp Limit 150°F (65°C) Cover Type Clear Plastic (scale visible) Weight 1.68 lbs       Information About L404A1370 The L404A1370 belongs to the Honeywell Pressuretrol L404A series, which are high-limit controllers intended for use in steam or gas pressure systems. It features a stainless steel diaphragm for pressure ranges from 5 to 50 PSI, with SPST snap-acting switch functionality. This model offers subtractive differential pressure control and supports external adjustments via a visible scale through a clear cover. It operates using a bellows mechanism and is designed for use with ¼" NPT pipe threading or surface mounting. The unit is UL and CSA approved and rated for ambient temperatures up to 150°F. Key Features: Pressure Range of 5–50 PSI: Adjustable via external scaleplate, with mid-scale differential of approximately 6–12 PSI. SPST Snap-Acting Switch: Simplifies control with reliable open/close contact behavior. Diaphragm Sensing Element: Uses stainless steel diaphragm for accurate sensing within the target pressure range. Subtractive Differential: Designed to respond to pressure decreases below setpoint. Clear Plastic Cover: Allows for easy inspection and access to pressure adjustment screws. ¼" NPT Threaded Mounting: Supports both pipe and surface installation methods. UL and CSA Approved: Certified for industrial and commercial compliance. Ambient Temperature Limit 150°F (65°C): Ensures stability in hot environments. Electrical Ratings: Rated for up to 8.0 A at 120V AC and 2.4 A at 120V DC. Compact Design: Dimensions approximately 5.5" wide × 6.5" high × 2.5" deep. The L404A1370 provides robust and accurate switching for medium-range pressure control tasks in steam heating and air systems.

Brand: Honeywell · Category: Relays, Contactors & Switches

Key features

Specifications

Manufacturer part numberL404A1370
ConditionNew/Never Used Surplus
BrandHoneywell
CategorySensors & Switches
Part NumberL404A1370
SubcategoryPressure Switch
SeriesL404A
Pressure Range5–50 PSI
Differential (mid-scale)Approx. 6–12 PSI
Switch TypeSPST (Snap-Acting)
Pressure Sensing ElementStainless Steel Diaphragm
Electrical Rating (120V AC)8.0 A (Full Load), 4.0 A (Locked Rotor)
Electrical Rating (240V AC)5.1 A (Full Load), 3.6 A (Locked Rotor)
Electrical Rating (DC)2.4 A (120V), 1.2 A (240V)
Mounting¼" NPT or Surface Mount
Ambient Temp Limit150°F (65°C)
Cover TypeClear Plastic (scale visible)
Weight1.68 lbs
Product typePressure Switch

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