Honeywell

RS Stock No.:: 820-7410
Mfr. Part No.:: 21SX39-T
Brand:: Honeywell

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Subtotal (1 unit)*

$25.44

(exc. GST)

$27.98

(inc. GST)

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In Stock

Plus 232 unit(s) shipping from 27 March 2026
Plus 250 unit(s) shipping from 03 April 2026

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Units	Per unit
1 - 9	$25.44
10 - 24	$25.10
25 - 49	$24.65
50 - 99	$24.17
100 +	$23.76

*price indicative

RS Stock No.:: 820-7410
Mfr. Part No.:: 21SX39-T
Brand:: Honeywell

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Honeywell
	Minimum Operating Temperature	-54°C
	Microswitch Type	Subminiature

	Select all
	Brand Honeywell
	Minimum Operating Temperature -54°C
	Microswitch Type Subminiature

COO (Country of Origin):: MX

Honeywell Series SX Micro Switch, 1.39N Operating Force, 250V Contact AC Voltage - 21SX39-T

This micro switch is a Compact electromechanical switch designed for precise switching in control and sensing assemblies within industrial environments. It delivers single-pole changeover switching suitable for signal routing and load control, with a pin plunger actuator that provides direct mechanical actuation for limit detection and user-interface inputs.

Features and Benefits:

• SPCO contact arrangement for versatile circuit switching
• 250V AC contact rating supports mains-level applications
• 7A switching current enables moderate load control
• 1.39N actuation force for consistent tactile response
• Phenolic housing offers electrical insulation and dimensional stability
• Mechanical endurance to 10 million operations for long service life

Applications

• Suitable for end-of-travel detection in automation equipment
• Ideal for control panels requiring tactile limit inputs
• Used for safety interlocks in electrical enclosures
• Can be used for position sensing in mechanical assemblies

What Terminal type does it use for connections?

Electrical connections are MADE via solder terminals that permit secure, low-profile wiring in Compact assemblies.

What temperature conditions can it tolerate during operation?

The switch is rated to operate up to 121°C and down to -121°C for use in elevated and sub-zero temperature environments.

How small is the switch for space-constrained designs?

The device has a width of 6.35mm and a length of 20.3mm, allowing integration where footprint is limited.

What approvals support its use in regulated installations?

It carries CE, CSA, RoHS and UL approvals suitable for many international compliance needs.