MPN

Siemens 3SE5 Series Roller Lever Limit Switch, NO/NC, Metal Housing

RS Stock No.:: 769-6251
Distrelec Article No.:: 301-24-387
Mfr. Part No.:: 3SE5212-0CK21
Brand:: Siemens

Siemens 3SE5 Series Roller Lever Limit Switch, NO/NC, Metal Housing

Subtotal (1 unit)*

£34.37

(exc. VAT)

£41.24

(inc. VAT)

FREE delivery for orders over £50.00

Temporarily out of stock

Shipping from 30 September 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	£34.37

*price indicative

RS Stock No.:: 769-6251
Distrelec Article No.:: 301-24-387
Mfr. Part No.:: 3SE5212-0CK21
Brand:: Siemens

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Actuator Type	Roller Lever
	Normal State Configuration	NO/NC
	Housing Material	Metal
	Connection Type	M20
	Series	3SE5
	Length	31mm
	Depth	68mm
	Width	33mm
	Mounting Orientation	Universal
	Mechanical Life	15000000Cycles

	Select all
	Brand Siemens
	Actuator Type Roller Lever
	Normal State Configuration NO/NC
	Housing Material Metal
	Connection Type M20
	Series 3SE5
	Length 31mm
	Depth 68mm
	Width 33mm
	Mounting Orientation Universal
	Mechanical Life 15000000Cycles

3SE5 Limit Switches, Complete Units

These complete units are popular versions of the SIRIUS 3SE5 limit switches. The standard design and function of the limit switches not only make it easy to select the right switch but also enable quick and easy installation, wiring and maintenance.
The SIRIUS 3SE5 is designed for safety applications up to Category 4 according to ISO 13849-1 (EN 954-1) when you select the right product and use them properly in conjunction with fail-safe evaluation units such as the 3TK28, ASISafe, SIMATIC or SINUMERIK.

Enclosure sizes

Open-type position switch IP20 (3SE5 250-*****)
Plastic enclosures according to EN 50047, 31 mm wide, IP65, 1 cable entry (3SE5 232-***** & 3SE5 234-*****)
Plastic enclosures according to EN 50041, 40mm wide, IP66/IP67, 1 cable entry (3SE5 132-***** & 3SE5 134-*****)
Plastic enclosures, 50 mm wide, IP66/IP67, 2 cable entries (3SE5 242-*****)
Metal enclosures according to EN 50047, 31 mm wide, IP66/IP67, 1 cable entry (3SE5 212-***** & 3SE5 214-*****)
Metal enclosures according to EN 50041, 40mm wide, IP66/IP67, 1 cable entry (3SE5 112-*****)
Metal enclosures, 56 mm wide, IP66/IP67, 3 cable entries (3SE5 122-*****)
XL metal enclosures with 4 to 6 contacts, 56 mm wide, IP66/IP67, 3 cable entries (3SE5 162-*****)
Enclosures with an ambient temperature to -40°C (3SE5 ***-*****-1AJ0)

Enclosure versions

With contact blocks with two or three contacts (screw terminals) designed as slow-action or snap-action contacts; the slow-action contacts also with make-before-break (refer to tech. data)
Optional LED status display (3SE5 ***-1K*** & 3SE5 ***-1L***)
With M20 ´ 1.5 connection thread or mounted 4 or 5 pole M12 connector socket (refer to tech. data)
Versions with increased corrosion protection (3SE5 ***-*****-1CA0)
Versions for operating temperature up to -40°C (3SE5 ***-*****-1AJ0)
Metal enclosure for explosion protection, ATEX, (3SE5 ***-*****-1DA0)

Features

Easy replacement and mounting of actuator heads through plug mounting with uniform interface
Integrated chlorinated rubber diaphragm (high functional safety in cold and aggressive environments)
All actuator heads can be rotated in 22.5° increments
Mounting time reductions of up to 25% through rapid connection system for plastic enclosures
Versions with 3-pole contact blocks ensure increased safety through redundant disconnection and additional signalling while featuring the same enclosure dimensions as 2-pole contact blocks
IP65/66/67 protection
Switching points and mounting according to EN 50041 or EN 50047
Built in rounded plunger with 3mm over travel, (total travel 9mm) for greater tolerance when switching

Safety Limit Switch