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P28DN-4C Johnson Controls PROTECTION Control
KKM Solutions is an independent parts distributor, not an authorized Johnson Controls dealer — how we source.
Overview
Part number P28DN-4C from Johnson Controls, listed in Control Relays. KKM Solutions quotes this part with pricing and availability confirmed per order.
Overview The Johnson Controls P28DN-4C is an electromechanical lube oil pressure cutout control designed to provide dependable protection for pressure-lubricated refrigeration compressors, specifically approved for ammonia service. It monitors the net oil pressure within the lubrication system and safely de-energizes the compressor if the pressure falls below the differential setpoint for longer than the allocated time delay. Features Built-in time delay relay to allow pressure pick-up at startup and prevent nuisance shutdowns from transient pressure drops Trip-free manual reset mechanism that prevents overriding the lockout by holding the reset button down Integrated alarm circuit and runlight terminals to indicate compressor trip status and normal pressure operation Direct-reading scale indication with an easily adjustable setpoint for optimal configuration Durable galvanized steel case with a dust-protected switch for long-term operational reliability Specifications Pressure Range: 8 to 70 PSI adjustable Switch Differential: 4.5 +/- 2.0 PSI Voltage Rating: 120/240 VAC heater circuit Maximum Working Pressure: 250 PSIG Maximum Overpressure: 325 PSI Pressure Connection: 1/4 inch internal NPT Compatible Refrigerant: Ammonia Applications Pressure-lubricated refrigeration compressor systems Semi-hermetic compressors Specialized industrial ammonia refrigerant service applications requiring dedicated low lube oil pressure protection
Product details
| Manufacturer | Johnson Controls |
|---|---|
| Manufacturer part number | P28DN-4C |
| Product category | Control Relays |
Request a quote for this part
Email orderdesk@kkmsolutions.com or call (825) 454-5367 for pricing and availability.
Frequently Asked Questions
How much does P28DN-4C cost?
P28DN-4C is listed at CA$1,199.91 (CAD) and can be ordered directly from this page with Add to Cart. That figure is a reference price and can change: your card is authorized at checkout and charged only once our order desk confirms the part, stock, and final price, and we email you first if anything has moved. Larger quantities or custom terms — email orderdesk@kkmsolutions.com for a volume quote.
Who manufactures the P28DN-4C?
P28DN-4C is made by Johnson Controls and is listed in our Control Relays category. KKM Solutions is an independent distributor, not an authorized Johnson Controls dealer: we source the exact Johnson Controls part number P28DN-4C, and the quote confirms condition and lead time before you order.
Is the P28DN-4C new and genuine?
Parts we supply are new and genuine unless the quote expressly states otherwise. Where a part is surplus, new-old-stock, refurbished or open-box, the quote says so before you approve it.
What warranty comes with the P28DN-4C, and can I return it?
Parts we supply are warranted against manufacturing defects for 1 year from the date of delivery; where the manufacturer's own warranty is longer, the manufacturer's warranty applies. The warranty covers repair, replacement, or credit of the defective part and does not cover normal wear items, misapplication, improper installation, or consequential damages. Contact us within 30 days of delivery before returning anything — all returns need a return authorization from the order desk.
What is the lifecycle status of P28DN-4C?
No published lifecycle status is on file for P28DN-4C. Johnson Controls lists whether a catalog number is current, superseded or end-of-life on its own product page, and our order desk confirms the status with the manufacturer at quote time, before you commit. Send the part number through the quote form on this page.
How quickly can P28DN-4C ship?
Lead time for P28DN-4C is quoted per order and confirmed on your quote, which our order desk sends within 1 business day. For a line-down emergency, call the 24/7 order desk at (825) 454-5367.
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