MICRO SWITCH™ Premium
Large Basic Switches
BZ | BA | BM | BE | 6AS Series
Datasheet
MICRO SWITCH™ Large Premium Basic Switches
Accurate, reliable, and repeatable, MICRO SWITCH™ BZ/BA/BM/BE Series features precise operating characteristics
and enhanced life. These premium, large snap-action switches offer precision operation and sensitive differential
travel.
Utilizing state-of-the-art manufacturing processes and quality controls, Honeywell has engineered premium, large
snap-action switches that meet various international agency requirements. Some models have military qualifications.
MICRO SWITCH™ BZ/BA/BM/BE Series are often used for precision on/off applications, as well as end of limit,
presence/absence, and manual operator interface functions.
Their engineered design is suitable for various application needs. Configured options with BZ, BA, BM, and BE
switches provide a wide variety of operating and interface characteristics.
The MICRO SWITCH™ 6AS Series consists of two large premium BZ/BA/BM/BE snap-action switches ganged
together and actuated by a single actuator. Field adjustable operating point is an option for one or both switches.
What makes our switches better?
•
Industry-leading temperature range for options up to 204 °C
[400 °F] and temperatures as low as -55 °C [-67 °F]
•
Exclusive current carrying capability of up to 25 A
•
International approvals: UL, CSA, ENEC, CE listings
•
Options for circuitry, styles, connection types and a wide
selection of actuator styles
•
Dependable performance -
tested up to 20 million mechanical cycles
•
MICRO SWITCH™ legacy and expertise - over 75 years of
engineering excellence and experience
Operating in extreme
temperatures is
all in a day’s work for
MICRO SWITCH™
large basics!
QUALITY • RELIABLE • RUGGED • GLOBAL
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Features
and Benefits
GLOBAL USE AND APPROVALS
Switches certified to
UL, CSA, ENEC, and CE
for global use
FLEXIBILITY OF PRODUCT CHARACTERISTICS
Honeywell’s large basic switches offer various operating force and differential travel
options to meet the actuator type. Designed with
momentary or maintained
contact action,
these switches may perform a variety of functions as well as
offering a choice of actuation, termination and operating characteristics for
design
flexibility
Listings certified for global use and mulitple applications
VARIENTS FOR EXTREME CONDITIONS
With an IP64 sealing option to maintain switch enclosure sealing, many listings can
be used in dirty, harsh environments with their
dustproof and splash resistant
seals.
Many versions operate in extreme temperatures, up to 121 °C [250 °F],
and several with high temperature options for up to 204 °C [400 °F], as well as
temperatures as low as -55 °C [-67 °F]
EASY INSTALLATION REDUCES OVERALL COSTS
The switch’s enlongated mounting hole allows for easier, more accurate mounting
TIGHT HYSTERESIS/DIFFERENTIAL TRAVEL
Designed with a hysteresis
as small as 0,008 mm [0.0003 in],
the BZ/BA/BM/
BE switches may be used in applications where very tight and sensitive control is
required between the operate and release points
Standardize switching packages
CURRENT CAPACITY FROM LESS THAN 1 A TO 25 A
With a broad current capacity,
one switch package can control a wide range
of electrical loads.
As requirements vary for applications, a standardized switch
package may help reduce costs and increase application flexibility.
Gold contacts
available for controlling low energy/low power circuits
ENHANCED PERFORMANCE
Internal flat spring design delivers optimum
performance and switch reliability
MILITARY APPROVALS
MIL-PRF-8805
switches available for military-specified applications
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Potential Applications
BUILDING CONTROLS AND EQUIPMENT
Often used in a building’s boiler/heater controls, in HVAC systems to sense exhaust
pressure on high efficiency furnances, and in fire suppression systems to sound
alarm when sprinkler activation/waterflow is detected. May also be used in machine
tools to limit the maxiumum movement for pieces of equipment
DOORS AND LIFTS
May be used in elevators and lifts to sense if the car is in position before the door
opens and on door-latching mechanisms to indicate door closed and/or door
locked
SEMI-TRUCKS AND TRAILERS
Can be used to disengage the cruise control when the clutch pedal is depressed
and for diesel engine brake assist. For surface transportation equipment, can be
used as a seat switch
VALVES
Detects whether a valve is “open” or “closed”
TIMING DEVICES
Often used in commercial/industrial-grade timers to turn outputs “on” and/or “off” at
preset times
COMMUNICATION SYSTEMS
May be used as a door interlock on communication consoles or enclosures
FOOT SWITCHES
In commerical and industrial foot switch enclosures, may be used as the switching
element
COMMERCIAL AND INDUSTRIAL KITCHEN EQUIPMENT
May be used to indicate door closed and/or door locked for the self-cleaning feature
IRRIGATION EQUIPMENT
Often used for limiting maximum offset of irrigation towers
MEDICAL INSTRUMENTATION
In medical and dental equipment, often used in foot switches to control the dental
drill and the positioning of the chair
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MICRO SWITCH™ Premium Large Basic Switches
Table 1. Specifications
Characteristic
BZ
Series
WZ
Series
YZ
Series
BA
Series
WA
Series
YA
Series
BM Series
BE Series
Ampere rating
Circuitry
Operating force
Termination
Actuator
Voltage
Agency approvals
Operating temperature
Contacts
Housing
Sealing
Dielectric strength
Contact resistance
Insulation resistance
Vibration
Expected mechanical life
Expected electrical
service life
Rated frequency
SPDT
15 A
SPNC
SPNO
SPDT
20 A
SPNC
SPNO
1.0 oz to 28 oz
22 A
SPDT
25 A
SPDT
quick connect, solder, screw
pin plunger, overtravel plunger, straight, roller, flexible leaf roller, flexible leaf
125 Vac, 250 Vac, 125 Vdc, 250 Vdc
UL, CSA, ENEC, CE (varies by specific model)
-55 °C to 85 °C [-67 °F to 185 °F]
silver, silver cadmium oxide, gold alloy
general purpose phenolic
Environment sealing option available (options for IP64 Sealing)
2000 V between each terminal and ground
15 m Ohm max.(initial)
100,000 M Ohm min.
1,5 mm peak-to-peak amplitude, frequency 10 Hz to 55 Hz, for two continuous hours
up to 20,000,000 cycles at 95% survival
100K operations at rated load
50 Hz/60 Hz
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