Honeywell · Switches
4BS3
Switch, Basic, Large, SPDT, Pin Plunger, 15A @ 250VAC, Environmentally Sealed
Part Number4BS3
ManufacturerHoneywell
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-607-2710 (NSN)
Federal Item NameSWITCH,CENTRIFUGAL
Terminal TypeTAB, SOLDER LUG
Mounting MethodSLOT AND UNTHREADED HOLE(S)
Overall Length1.938 INCHES NOMINAL
Overall Width0.688 INCHES NOMINAL
Overall Height0.844 INCHES NOMINAL
Special FeaturesPHYSICAL APPEARANCE OF BODY STYLE 22 IS LIMITED TO THE BASIC RECTANGULAR SHAPE
Mounting Slot Width0.139 INCHES NOMINAL
Mounting Facility PatternTWO POSITION IN-LINE
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Contact Action StimulusINCREASE
Federal Supply Class5930 — Switches
Contact Load Current Rating166.0 MILLIAMPERES RESISTIVE LOAD SECOND VOLTAGE
Contact AdjustabilityACTUATION POINT NOT ADJUSTABLE
Unthreaded Mounting Hole Diameter0.139 INCHES NOMINAL
Contact Voltage Rating In Volts125.0 AC AT SEA LEVEL FIRST VOLTAGE
Distance Between Mounting Facility1.000 INCHES NOMINAL
Vendor Part Numbers8410714
Cancelled NSN5930-00-570-7702 (cancelled)
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 4BS3 available?
We can source 4BS3 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 4BS3 by Honeywell obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4BS3 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 4BS3?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 4BS3?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.