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Overview

MICRO SWITCH BS Series Large Premium Switch, Single Pole Double Throw Circuitry, 15 A at 250 Vac, Pin Plunger Actuator, Screw Termination.
MICRO SWITCH BS Series switches offer alternatives to solve challenging switch applications. These unique solutions can provide adjustable operating characteristics, sequential outputs, or impact actuation (no external plunger).
12BS218 Specialty Large Basic Switches - Honeywell

Technical Specifications

Switch Type MICRO SWITCH Standard 25,15 mm H x 17,45 mm W x 49,28 mm L [.99 in H x .687 in W x 1.94 in L]
Ampere Rating 15 A
Sealed No
Circuitry SPDT
Actuator Pin Plunger
Termination Screw
Voltage 250 Vac
Contact Type Silver
Operating Force (OF) 1,67 N to 2,78 N [6 oz to 10 oz] max.
Release Force 1,11 N [4.0 oz] min.
Overtravel (OT) 0,13 mm [0.005 in] min.
Differential Travel (DT) 0,005 mm [0.0002 in] max.
Material Plastic
Housing Material General Purpose Phenolic
Agency Approvals and Standards UL, CSA
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 24,94 g to 34,01 g [0.055 lb to 0.075 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]
Recommended For Adjustable Deadbreak Wheel on top of switch to change the air gap. Dial in OP, RP, and DT
Comment Operating characteristics measured at minimum settings
Availability Global
Series Name BZ/BA/WA/YZ

Technical Specifications

Switch Type MICRO SWITCH Standard 25,15 mm H x 17,45 mm W x 49,28 mm L [.99 in H x .687 in W x 1.94 in L]
Ampere Rating 15 A
Sealed No
Circuitry SPDT
Actuator Pin Plunger
Termination Screw
Voltage 250 Vac
Contact Type Silver
Operating Force (OF) 1,67 N to 2,78 N [6 oz to 10 oz] max.
Release Force 1,11 N [4.0 oz] min.
Overtravel (OT) 0,13 mm [0.005 in] min.
Differential Travel (DT) 0,005 mm [0.0002 in] max.
Material Plastic
Housing Material General Purpose Phenolic
Agency Approvals and Standards UL, CSA
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 24,94 g to 34,01 g [0.055 lb to 0.075 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]
Recommended For Adjustable Deadbreak Wheel on top of switch to change the air gap. Dial in OP, RP, and DT
Comment Operating characteristics measured at minimum settings
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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