Square D · Electronic Components
XB4BG21
SELECTOR SWITCH 600VAC 1.2A XB4
Part NumberXB4BG21
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-562-6027 (NSN)
Federal Item NameSWITCH SUBASSEMBLY
Component Type And Quantity1 KEY AND 1 BLOCK
Federal Supply Class5930 — Switches
Vendor Part NumbersDR05IFM005001 ITEM 27SB6, DR05IFM005001 ITEM 27SB2, DR05IFM005001 ITEM 15SA1
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 XB4BG21 available?
We can source XB4BG21 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 XB4BG21 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If XB4BG21 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 XB4BG21?
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 XB4BG21?
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.