We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
UNITED ELECTRIC J21K-254 Differential Pressure Switch - Replacement HVACR Controls, Switches & Thermostats
UNITED ELECTRICReplacement HVACR Controls, Switches & Thermostats

UNITED ELECTRIC J21K-254 Differential Pressure Switch

UNITED ELECTRIC Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Differential Pressure Switch.

SKU 3G-OTH-91220

Also listed as: J21K254 · J21K 254

Brand
UNITED ELECTRIC
Item
J21K-254 Differential Pressure Switch
Part Number
J21K-254
Category
Replacement HVACR Controls, Switches & Thermostats
Available to Order
Also known as:J21K-254UNITED ELECTRIC
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

UNITED ELECTRIC
Manufacturer Part Number
J21K-254
Product Type
Differential Pressure Switch

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

UNITED ELECTRIC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

UNITED ELECTRIC Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Differential Pressure Switch.

Frequently Asked Questions

What is a UNITED ELECTRIC J21K-254 differential pressure switch used for?

The UNITED ELECTRIC J21K-254 differential pressure switch monitors pressure differences in HVACR systems, triggering alarms or controlling fans, dampers, and filters. It is commonly applied in commercial and industrial air handling, clean rooms, and process ventilation to ensure safe, efficient operation.

What are the specifications of the UNITED ELECTRIC J21K-254?

The UNITED ELECTRIC J21K-254 is a differential pressure switch with manufacturer part number J21K-254. It is designed for HVACR controls, switches, and thermostats applications. For detailed pressure range, electrical ratings, and connection sizes, consult the product datasheet or contact 3G Electric.

Where to buy a UNITED ELECTRIC J21K-254 differential pressure switch worldwide?

3G Electric supplies the UNITED ELECTRIC J21K-254 differential pressure switch worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this replacement HVACR control.

How to install a UNITED ELECTRIC J21K-254 differential pressure switch?

Install the UNITED ELECTRIC J21K-254 in a clean, dry location with the diaphragm vertical to avoid moisture trapping. Connect pressure lines to high and low ports per system schematic, and wire according to the electrical rating. Always follow manufacturer guidelines and local codes for safe operation.

Used in

Common applications for UNITED ELECTRIC
Commercial HVAC — United Electric 24-014 differential pressure switch for filter monitoring and duct static pressure control.
Refrigeration — United Electric J54-25 pressure switch for compressor protection and pressure control in refrigeration systems.
Industrial Air Handling — United Electric J21K-254 differential pressure switch for fan and damper control in air handling units.
Clean Rooms — United Electric J21K-150 differential pressure switch for monitoring pressure differentials between clean and non-clean areas.
Process Control — United Electric H100-701 pressure switch for monitoring and controlling pressure in industrial processes.
Heating Systems — United Electric 10F15 pressure switch for pressure monitoring in heating equipment and boilers.
Not sure this is the right part? Photo-identify it→

UNITED ELECTRIC Products

3G Electric supplies UNITED ELECTRIC replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from UNITED ELECTRIC

View all UNITED ELECTRIC parts →
This differential pressure switch monitors pressure differences in HVACR systems. It is used for applications such as filter monitoring, duct static pressure control, and air handling unit protection. The switch triggers alarms or equipment shutdown when setpoints are exceeded
UNITED ELECTRIC
This differential pressure switch monitors pressure differences in HVACR systems. It is used for applications such as filter monitoring, duct static pressure control, and air handling unit protection. The switch triggers alarms or equipment shutdown when setpoints are exceeded
UNITED ELECTRIC
UNITED ELECTRIC
Pressure switch for HVACR systems, used to monitor and control pressure in refrigeration, air conditioning, and heating equipment. Triggers electrical contacts at set pressure thresholds to protect compressors and ensure system efficiency
UNITED ELECTRIC
UNITED ELECTRIC
Pressure switch for monitoring and controlling fluid or air pressure in HVACR systems. Triggers an electrical contact when pressure reaches a set point, protecting compressors, pumps, and refrigeration circuits from overpressure or underpressure conditions
Pressure switch for HVACR systems, used to monitor and control pressure in refrigeration, air conditioning, and heating equipment. Triggers electrical contacts at set pressure thresholds to protect compressors and maintain system efficiency
UNITED ELECTRIC
Pressure switch for HVACR systems, used to monitor and control pressure in refrigeration, air conditioning, and heating equipment. Triggers electrical contacts at set pressure thresholds to protect compressors and maintain system efficiency

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first