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JOHNSON CONTROLS Differential Pressure Control: SPST, Open on Fall, 208V/240V, 30 psi Max Diff - Low Side - Differential Controls
JOHNSON CONTROLSDifferential Controls

JOHNSON CONTROLS Differential Pressure Control: SPST, Open on Fall, 208V/240V, 30 psi Max Diff - Low Side

The JOHNSON CONTROLS P74BA-1C is a SPST differential pressure control with automatic reset and a switch action of Open on Fall. It is rated for 240V and supports a maximum differential pressure of 30 psi on the low…

SKU 3G-OTH-66824

Also listed as: P74BA1C · P74BA 1C

Brand
JOHNSON CONTROLS
Item
Differential Pressure Control: SPST, Open on Fall, 208V/240V, 30 psi Max Diff - Low Side
Category
Differential Controls
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
P74BA-1C
Type
Open on Fall, 208V/240V, 30 psi Max Diff - Low Side, Auto Reset
Reset Type
Automatic
Rated Voltage
240V
Switch Action
Open on Fall

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JOHNSON CONTROLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The JOHNSON CONTROLS P74BA-1C is a SPST differential pressure control with automatic reset and a switch action of Open on Fall. It is rated for 240V and supports a maximum differential pressure of 30 psi on the low side. This device is designed for monitoring and controlling pressure differentials in industrial systems.

Frequently Asked Questions

What is the Johnson Controls P74BA-1C differential pressure control used for?

The Johnson Controls P74BA-1C is used to monitor and control pressure differentials in industrial HVAC, refrigeration, and process systems. It opens its SPST circuit on a pressure fall, protecting equipment like compressors and pumps from low-pressure conditions. 3G Electric supplies this control across 14 industrial departments.

What are the specifications of the Johnson Controls P74BA-1C?

The Johnson Controls P74BA-1C is a SPST differential pressure control rated for 240V with automatic reset. Its switch action is Open on Fall, and it supports a maximum differential pressure of 30 psi on the low side. The manufacturer part number is P74BA-1C.

Where to buy the Johnson Controls P74BA-1C worldwide?

3G Electric sources and delivers the Johnson Controls P74BA-1C differential pressure control worldwide. We handle full logistics and customs clearance as a global industrial supplier. Contact us for availability and lead time on this and other Johnson Controls products.

How to install the Johnson Controls P74BA-1C differential pressure control?

Install the Johnson Controls P74BA-1C by connecting the high- and low-pressure ports to the system, ensuring the switch action (Open on Fall) matches your application. Wire the SPST contacts for 240V and verify automatic reset operation. Always follow the manufacturer's installation manual for safe setup.

Used in

Common applications for JOHNSON CONTROLS
Industrial refrigeration — Johnson Controls P170SA-1C dual pressure control for compressor protection in ammonia or halocarbon systems
Chiller plant automation — Johnson Controls VA7810-HGA-2 electric globe valve actuator for modulating chilled water flow in VG7000 series valves
Pneumatic HVAC retrofit — Johnson Controls T-4002-302 conversion kit for upgrading existing Robertshaw thermostats in commercial buildings
Cooling tower water management — Johnson Controls V-4332-1007 pneumatically actuated diaphragm valve for 3-way diverting of water flow
Boiler fuel oil pressure monitoring — Johnson Controls P545NCB-25C electronic lube oil pressure control with alarm for burner management systems
Process pressure sensing — Johnson Controls P599AAPS105C pressure transmitter with IP67 rating for washdown zones in food and beverage plants

JOHNSON CONTROLS Products

3G Electric supplies JOHNSON CONTROLS differential controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Single Pressure Control: High Limit, Manual Reset, 200 psi to 610 psi, Open on Rise, SPST (MPN P170DA-400C)
JOHNSON CONTROLS
Single Pressure Control: High Limit, Manual Reset, 200 psi to 610 psi, Open on Rise, SPST (MPN P170DA-400C)
Single Pressure Control: Low Limit, Manual Reset, 20 in Hg to 100 psi, Open on Fall, SPST (MPN P70BA-1C)
JOHNSON CONTROLS
Single Pressure Control: Low Limit, Manual Reset, 20 in Hg to 100 psi, Open on Fall, SPST (MPN P70BA-1C)
Low Pressure Control: Low Limit, Auto Reset, 100 psi to 100 psi, 7 psi to 50 psi, Open on Fall, SPST (MPN P70AB-2CQ)
JOHNSON CONTROLS
Low Pressure Control: Low Limit, Auto Reset, 100 psi to 100 psi, 7 psi to 50 psi, Open on Fall, SPST (MPN P70AB-2CQ)
Pressure Cut-Out Control: High or Low Limit, Auto Reset, 7 psi to 250 psi, 30 psi, Open on Fall (MPN P20EB-1C)
JOHNSON CONTROLS
Pressure Cut-Out Control: High or Low Limit, Auto Reset, 7 psi to 250 psi, 30 psi, Open on Fall (MPN P20EB-1C)
Single-pressure control with SPST contact form rated for 120V AC. Features auto reset and open on fall switch action. Pressure range from 12 in Hg to 80 psi with a differential of 5 psi to 35 psi. Used in HVAC and refrigeration systems for low-pressure limit protection
JOHNSON CONTROLS
Single-pressure control with SPST contact form rated for 120V AC. Features auto reset and open on fall switch action. Pressure range from 12 in Hg to 80 psi with a differential of 5 psi to 35 psi. Used in HVAC and refrigeration systems for low-pressure limit protection
High Pressure Control: High Limit, Manual Reset, 200 psi to 610 psi, Open on Rise, SPST (MPN P70DA-400C)
JOHNSON CONTROLS
High Pressure Control: High Limit, Manual Reset, 200 psi to 610 psi, Open on Rise, SPST (MPN P70DA-400C)

More from JOHNSON CONTROLS

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This differential pressure control features SPDT switch action that opens and closes on both rise and fall of differential pressure. It is rated for 208V/240V with automatic reset and a setpoint of 3.5 psi. Commonly used in HVAC, refrigeration, and industrial fluid systems to monitor and switch electrical circuits based on pressure differential changes
JOHNSON CONTROLS
This differential pressure control features SPDT switch action that opens and closes on both rise and fall of differential pressure. It is rated for 208V/240V with automatic reset and a setpoint of 3.5 psi. Commonly used in HVAC, refrigeration, and industrial fluid systems to monitor and switch electrical circuits based on pressure differential changes
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Differential Pressure Control: SPDT, Open/Close on Rise and Fall, 208V/240V, Auto Reset, 1.5 psi (MPN P74FA-10C)
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Differential Pressure Control: SPDT, Open/Close on Rise and Fall, 208V/240V, Auto Reset, 1.5 psi (MPN P74FA-10C)