33HM SENSATA | Alldatasheet

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Technical content

www.sensata.com Copyright © 2018 Sensata Technologies, Inc. | 31, 32, 33HM SERIES MOTOR PROTECTORS HERMETICALLY SEALED ON-WINDING, 3-PHASE Introduction The Klixon® 31HM, 32HM, and 33HM on-winding motor protectors are 3-phase line break, automatic reset devices wired in series with each phase at the neutral point.

  • Protect WYE (Star) wound 3-phase motors from 1 to 15HP . Used in refrigeration compressors, submersible pumps and other restrictive environments.
  • Increased protection in a small size, with a rugged all welded construction. Low profile shape allows for close coupling to motor windings.
  • Hermetic reliability designed for leakage rates less than 1 X 10-9 per second of air with 1 atmosphere pressure differential.
  • Klixon® snap-action discs assure positive make and break action and controlled temperature differential. These protectors are designed to protect 3-phase refrigeration and air conditioning compressor motors from excessive winding temperatures; however, applications may be made to any 3-phase motors where an environmental seal is required. Small size permits the devices to be installed directly on the motor windings for precise temperature monitoring, thus affording protection against such severe overload conditions as loss of refrigerant charge, low voltage locked rotor, and single phasing. The 31HM, 32HM, and 33HM are designed to reduce installation costs by replacing pilot control systems with a simple, economical, compact device. Features and Benefits SPECIFICATIONS Locked Rotor Current Capacity Std. 1XX Series 4XX Series 5XX Series 15XX HC Series 230V 460V 575V 230V 240V 460V 575V 230V 460V 575V 31HM 70A 40A 35A 60A 90A 50A 40A Not Available 32HM 135A 70A 55A 180A 200A 100A 80A 275A 175A 125A 33HM Not Available 250A 285A 145A 115A 380A 190A N/A Current ratings are based on life test data which has demonstrated high reliability at 2000 cycles at 0.7 power factor on Sensata life test boards. These capacities are intended as a guide for application work.

www.sensata.com Page 2 Copyright © 2018 Sensata Technologies, Inc. DIAGRAMS & CONFIGURATIONS Standard Operating Temperature Opening Temperature 90ºC to 170ºC in 5ºC increments Tolerance ±5ºC Closing Temperature To suit application Tolerance ±9ºC for <150ºC opening ±15ºC for ≥150ºC

www.sensata.comCopyright © 2018 Sensata Technologies, Inc. Sensata 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. CONTACT US Revised 01/25/18 Americas +1 (508) 236-2551 electrical-protection-sales@ sensata.com Europe, Middle East & Africa 3 174 357 8156 info-sse@list.sensata.com Asia Pacific EP_Asia_Public@list.sensata. com China +86 (21)2306 1651 India +91 (40)4033 9611 Japan +81 (45)277 7104 Korea +82 (53) 644 9685 Rest of Asia +65(6478)6860 ORDERING OPTIONS Example : 31HM XXX-XXX Base Part Number

Electrical Characteristics

Quick Connects, Wire Leads, Sleeves, etc.) 31HM XXX XXX UL / C-UL File# E15962 DEKRA (ENEC) 2018218.07 CQC 31HM - CQC04002010972 32HM - CQC04002010971 33HM - CQC15002131252 AGENCY APPROVALS & CERTIFICATIONS When making an inquiry on Klixon® hermetically sealed motor protectors, be certain to specify the entire part number for your application, if known. The six digits following the series identification indicate your specific electrical and physical requirement.