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3G Electric
RANCO 9531N251 Constant Differential Defrost Control - Constant Differential Defrost Controls
RANCOConstant Differential Defrost Controls

RANCO 9531N251 Constant Differential Defrost Control

The RANCO 9531N251 is a constant differential defrost control, specifically a Defrost Cycle Control: Constant Cut-In. This SPST switch operates with a 14°F cold-off and 22°F warm-on set point, and is rated for…

SKU 3G-OTH-67313

Brand
RANCO
Item
9531N251 Constant Differential Defrost Control
Part Number
9531N251
Category
Constant Differential Defrost Controls
Available to Order
Also known as:9531N251RANCO
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Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
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Technical Specifications

RANCO
Manufacturer Part Number
9531N251
Type
SPST
AC
125/250V
Voltage
125/250V AC
Warm On
22°F
Cold Off
14°F

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

Product Description

The RANCO 9531N251 is a constant differential defrost control, specifically a Defrost Cycle Control: Constant Cut-In. This SPST switch operates with a 14°F cold-off and 22°F warm-on set point, and is rated for 125/250V AC.

Frequently Asked Questions

What is the RANCO 9531N251 defrost control used for?

The RANCO 9531N251 is a constant cut-in defrost cycle control used in commercial refrigeration systems. It automatically initiates defrost at 22°F warm-on and terminates at 14°F cold-off, preventing ice buildup on evaporator coils in walk-in coolers and freezers.

What are the specifications of the RANCO 9531N251?

The RANCO 9531N251 is a SPST constant differential defrost control rated for 125/250V AC. It features a 14°F cold-off and 22°F warm-on set point. The manufacturer part number is 9531N251, and it is designed for reliable defrost cycling in commercial refrigeration applications.

Where to buy the RANCO 9531N251 worldwide?

3G Electric supplies the RANCO 9531N251 defrost control worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this constant cut-in defrost cycle control.

How to install the RANCO 9531N251 defrost control?

Install the RANCO 9531N251 by mounting it securely in the refrigeration control panel and wiring the SPST switch according to the system schematic. Ensure power is off before connecting the 125/250V AC supply. Follow standard refrigeration best practices for defrost timer placement and sensor positioning.

Used in

Common applications for RANCO
Commercial refrigeration — RANCO P30-3801 lube oil pressure control on Copeland compressors with 240V AC input and alarm circuit
Supermarket refrigeration racks — RANCO A30-2210 constant differential defrost control with 30°F cold-off and 42°F warm-on at 120V AC
Walk-in freezers and coolers — RANCO A30-261 defrost control with 32°F cold-off and 61°F warm-on at 277V AC
Packaged HVAC units — RANCO A22-2451 SPDT defrost control with 46°F cold-off and 81°F warm-on at 277V AC
Industrial process cooling — RANCO P30-5827 lube oil pressure control with 0–350 psi range and 120-second delay
Ice machines and display cases — RANCO A30-180 defrost control with -4°F cold-off and 38°F warm-on at 120/240V AC
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RANCO Products

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

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