20425

20425 SENSATA | Alldatasheet

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www.sensata.com Copyright © 2018 Sensata Technologies Inc. Introduction Klixon® 20425 Series thermostats are fixed setting, low-cost snap-action temperature controls designed with sealed construction for refrigeration, air conditioning and heat pump applications. Sensata Technologies has been a leading global supplier of pressure sensors & switches for over 50 years. Features and Benefits Temperature Settings, Tolerances and Nominal Differentials The 20425 Series is available in single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) automatic reset configurations. All operating parts and lead connections are contained within a metal cup which is filled with an epoxy resin compound to completely seal out moisture, dust and other contamination. Temperature actuation is initiated by the Klixon snap-action bi-metallic disc. The snap-action of the disc provides fast, accurate switching. The disc is located at the bottom of the cup where thermal change at the mounting point is quickly transmitted to give this product a high degree of thermal sensitivity. A variety of mountings are available, as shown on the following pages.

• Completely sealed thermostat.
• Resists shock and vibration regardless of mounting position - Klixon® snap-action thermal disc assures positive make/break action.
• Splash proof enclosure - sealed against dirt and moisture.
• Easy to mount - available with bottom, thru-wall or tube mounting
• High capacity - up to 25 amp, 120 and 240 VAC resistive. UL recognized for 100,000 cycles. (SA995)
• Tamperproof - temperatures are factory set.
• Automatic reset - recycles automatically. TECHNICAL SPECIFICATIONS Range of Temperature Settings Mfg.* Tolerances Minimum Mean Temperature DifferentialOpen Close (-10) 221 15ºF 15ºF (-10) 221 20ºF 20ºF (-10) 221 30ºF 30ºF (-10) 221 40ºF 40ºF

20425 SERIES | HIGH CURRENT DEFROST THERMOSTATS

SNAP-ACTION AUTOMATIC RESET The list of temperature settings, tolerances and nominal differentials shown below are standard. (Selection of larger differentials and wider tolerances offer the lowest unit price). If settings and differentials other than those shown are desired, please contact Sensata Marketing. * Customers checking tolerances should allow for differences in test equipment.

www.sensata.com Page 2 Copyright © 2018 Sensata Technologies Inc. Ambient Temperature Exposure (Maximum) Contact Description Leads Electrical Clearances

20425 Series 0ºF to 221ºF

20427 Series 0ºF to 221ºF

20428 Series 0ºF to 221ºF

Klixon 204 Series thermostats are supplied in two contact structures identified by the numbers following the basic series number. The letter “F” added to the series number indicates that the thermostat is supplied as a fan switch (closes on temperature rise). The letter “L” indicates that the thermostat is supplied as a controlling and high limit control (opens on temperature rise). All thermostats with “F” and “L” designations are supplied with single-pole, single-throw switching action while “D” indicates single-pole, double- throw switching action. Leads are attached to the terminals of the basic unit prior to sealing. Leads are #14, #16, or #18 gauge wire size, and are provided with ends stripped. Quick connect terminals, eyelets, or other terminal configurations are available at additional cost. Length of lead as required by customers is measured from the center of the thermostat to: 1. End of stripped wire 2. Center of eyelet 3. Center of right angle Quick Connect 4. End of straight Quick Connect Standard Polyvinyl Chloride (PVC) insulation is available in a variety of colors as required. XLP wire insulation is available as an option. 1/4” through air to ground 3/8” oversurface to ground Wire Size (AWG) 20425 Series #14 5/16th wall 105ºC PVC, UL approved 1060 appliance wire #16 1/16th wall UL Style 1056 #16 1/32nd wall UL Style 1015 #18 1/16th wall UL Style 1056 #18 1/32nd wall* UL Style 1015

www.sensata.com Page 3 Copyright © 2018 Sensata Technologies Inc. Electrical Ratings - UL and CSA Recognized Engineering Services Sensata field sales engineers who understand your temperature control problems and how our products solve them are available to discuss your application needs. Use their expertise to eliminate needless engineering cost and give your products a competitive edge.

www.sensata.com Page 4 Copyright © 2018 Sensata Technologies Inc. DIMENSIONS AND SCHEMATICS All dimensions are in inches.

+1 (888) 438 2214 sensors@sensata.com Europe, Middle East & Africa +31 (74) 357 8156 temperature-info.eu @sensata.com Asia Pacific sales.isasia@list.sensata.com China +86 (21) 2306 1500 Japan +81 (45) 277 7117 Korea +82 (31) 601 2004 India +91 (80) 67920890 Rest of Asia +886 (2) 27602006 ext 2808 Page 5 Rev:03/30/18 www.sensata.com CONTACT USSensata Technologies, Inc. (“Sensata”) data sheets are solely intended to assist designers (“Buyers”) who are developing systems that incorporate Sensata products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible for using its independent analysis, evaluation and judgment in designing Buyer’s systems and products. Sensata data sheets have been created using standard laboratory conditions and engineering practices. Sensata has not conducted any testing other than that specifically described in the published documentation for a particular data sheet. Sensata may make corrections, enhancements, improvements and other changes to its data sheets or components without notice. Buyers are authorized to use Sensata data sheets with the Sensata component(s) identified in each particular data sheet. HOWEVER, NO OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE TO ANY OTHER SENSATA INTELLECTUAL PROPERTY RIGHT, AND NO LICENSE TO ANY THIRD PARTY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT, IS GRANTED HEREIN. SENSATA DATA SHEETS ARE PROVIDED “AS IS”. SENSATA MAKES NO WARRANTIES OR REPRESENTATIONS WITH REGARD TO THE DATA SHEETS OR USE OF THE DATA SHEETS, EXPRESS, IMPLIED OR STATUTORY, INCLUDING ACCURACY OR COMPLETENESS. SENSATA DISCLAIMS ANY WARRANTY OF TITLE AND ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT, QUIET POSSESSION, AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS WITH REGARD TO SENSATA DATA SHEETS OR USE THEREOF. All products are sold subject to Sensata’s terms and conditions of sale supplied at www.sensata.com SENSATA ASSUMES NO LIABILITY FOR APPLICATIONS ASSISTANCE OR THE DESIGN OF BUYERS’ PRODUCTS. BUYER ACKNOWLEDGES AND AGREES THAT IT IS SOLELY RESPONSIBLE FOR COMPLIANCE WITH ALL LEGAL, REGULATORY AND SAFETY-RELATED REQUIREMENTS CONCERNING ITS PRODUCTS, AND ANY USE OF SENSATA COMPONENTS IN ITS APPLICATIONS, NOTWITHSTANDING ANY APPLICATIONS-RELATED INFORMATION OR SUPPORT THAT MAY BE PROVIDED BY SENSATA. Mailing Address: Sensata Technologies, Inc., 529 Pleasant Street, Attleboro, MA 02703, USA.Copyright © 2018 Sensata Technologies, Inc. ORDERING OPTIONS Load Requirements Lead Wire Specifications Temperature Settings Type Mounting Flange Maximum Tolerances allowable on temperature settings. Estimated Yearly Usage (Length, wire size, type termination). Sensata field sales engineers who understand your temperature control problems and how our products solve them are available to discuss your application needs. Use their expertise to eliminate needless engineering cost and give your products a competitive edge. Other conditions which affect the thermostat should be described: 1. Maximum and minimum temperature exposure. 2. Location with respect to heat source. 3. Temperature transfer medium (air, metal surface, etc.). 4. Possible contamination sources (lint, chemical fumes, etc.). 5. Exposure to liquid and submersion. Agency File Number UL / CSA SA995 Guide No. SDFY2 Guide SDFY8 for category AGENCY APPROVALS AND CERTIFICATIONS