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Overview

MICRO SWITCH BM Series Premium Large Basic Switch, Single Pole Double Throw Circuitry, 22 A at 250 Vac, Pin Plunger Actuator, 1,95 N to 2,78 N [7.0 oz to 10.0 oz] Operating Force, Silver Cadmium Oxide Contacts, Screw Termination, UL, CSA, CE, ENEC.
MICRO SWITCH BZ/BA/BM/BE Series premium, large snap-action switches offer precision operation and sensitive differential travel. These Series meet various international agency requirements, and are often used for precision on/off applications, as well as end of limit, presence/absence, and manual operator interface functions. Configured options with BZ, BA, BM, and BE switches provide a wide variety of operating and interface characteristics. BZ/WZ/YZ switches are 15 A; BA/WA/YA switches are 20 A; BM/WM/YM switches are 22 A; and BE/WE/YE switches are 25 A.
BM-1R-A4 Premium Large Basic Switches - Honeywell


Technical Specifications

Switch Type MICRO SWITCH Standard 25,4 mm H x 17,8 mm W x 50,8 mm L [1.0 in H x 0.7 in W x 2.0 in L]
Ampere Rating 22 A
Sealed No
Circuitry SPDT
Actuator Pin Plunger
Termination Screw
Operating Temperature -55 °C to 85 °C [-67 °F to 185 °F]
Voltage 250 Vac
Contact Type Silver Cadmium Oxide
Operating Force (OF) 1,95 N to 2,78 N [7.0 oz to 10.0 oz] max.
Release Force 1,11 N [4.0 oz] min.
Pretravel (PT) 0,38 mm [0.015 in] max.
Overtravel (OT) 0,13 mm [0.005 in] min.
Differential Travel (DT) 0,013 mm [0.0005 in] max.
Operating Position (OP) 15,88 mm ±0,38 mm [0.625 in ±0.015 in]
Material Plastic
Housing Material General Purpose Phenolic
Agency Approvals and Standards UL, CE, CSA, ENEC
Mounting Screw Size 3,53 mm [0.139 in]
Mounting Centers 25,4 mm [1 in]
Tightening Torque 0,33 N m [3.0 in lb]
Weight 28,6 g [0.063 lb]
Package Height 24,1 mm [0.95 in]
Package Width 17,5 mm [0.69 in]
Package Length 49,3 mm [1.94 in]
Comment CE: 61058-1; UL: E12252; CSA: LR41370; Bottom facing #8 screws and cupwashers
Availability Global
Series Name BZ/BA/WA/YZ

Technical Specifications

Switch Type MICRO SWITCH Standard 25,4 mm H x 17,8 mm W x 50,8 mm L [1.0 in H x 0.7 in W x 2.0 in L]
Ampere Rating 22 A
Sealed No
Circuitry SPDT
Actuator Pin Plunger
Termination Screw
Operating Temperature -55 °C to 85 °C [-67 °F to 185 °F]
Voltage 250 Vac
Contact Type Silver Cadmium Oxide
Operating Force (OF) 1,95 N to 2,78 N [7.0 oz to 10.0 oz] max.
Release Force 1,11 N [4.0 oz] min.
Pretravel (PT) 0,38 mm [0.015 in] max.
Overtravel (OT) 0,13 mm [0.005 in] min.
Differential Travel (DT) 0,013 mm [0.0005 in] max.
Operating Position (OP) 15,88 mm ±0,38 mm [0.625 in ±0.015 in]
Material Plastic
Housing Material General Purpose Phenolic
Agency Approvals and Standards UL, CE, CSA, ENEC
Mounting Screw Size 3,53 mm [0.139 in]
Mounting Centers 25,4 mm [1 in]
Tightening Torque 0,33 N m [3.0 in lb]
Weight 28,6 g [0.063 lb]
Package Height 24,1 mm [0.95 in]
Package Width 17,5 mm [0.69 in]
Package Length 49,3 mm [1.94 in]
Comment CE: 61058-1; UL: E12252; CSA: LR41370; Bottom facing #8 screws and cupwashers
Availability Global
Series Name BZ/BA/WA/YZ

Documents


Product Features

  • Accepted world-wide standard "Large Basic" switch
  • Low operating force and differential travel
  • Long mechanical life up to 20,000,000 cycles at 95% survival
  • Elongated mounting hole for easier, more accurate mounting
  • Current rating ranges from 15 A to 25 A
  • Choice of actuation, termination and operating characteristics

Applications

  • Irrigation systems
  • Semi-trailer trucks
  • Timing devices
  • Office equipment
  • Test instruments
  • Medical/dental equipment
  • HVAC equipment
  • Manually operated devices
  • Valves

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