Siemens

3SE5212-0LU21

Image for illustration purposes only.

Siemens

If you're unsure whether this part is a perfect match, please contact us.

Condition Warehouse Stock Price
New Sealed
Full 24 months warranty
Est. shipping: July 24 2026
WM66-3S Enquire now £29.00 Add to Cart
New Sealed
Full 24 months warranty
Est. shipping: June 24 2026
WM44-3S 10+ in stock - Get Quote
New
Full 12 months warranty
Est. shipping: June 24 2026
WM44-3S Low stock - Get Quote
Used
Full 12 months warranty
Est. shipping: June 24 2026
WM44-3S Low stock - Get Quote
Buying more than one? Get Quote
Part Information:
Part Number:
3SE5212-0LU21
Manufacturer:
Availability:
15+ available from our partners
Conditions:
New Sealed, New and Used
Warranty:
Full 24 months warranty
Full 12 months warranty
Lead Time:
Need it Faster? Please Check With CJS
System ID Number:
4320020
Shipping:
We deliver worldwide
Weight:
0.24kg
Dimensions:
53mm x 112mm x 105mm
Also Known As:
3SE5212_0LU21, 3SE52120LU21, 3SE5212/0LU21, 3SE5212-0LU21
Our Warehouse Description:

The 3SE5212-0LU21 is a mechanical hinge position switch featuring a metal enclosure with a diameter of 31 mm and an M20x1.5 connection thread. It operates with positive opening contacts, including one normally open (NO) and two normally closed (NC) snap-action contacts. The switch has a hollow shaft with an 8 mm diameter and is designed for safety and machine guarding applications. It typically functions with an operating angle of approximately 10°, providing reliable detection of door or guard positions in various automation and safety systems.

The above description is based on our office/warehouse notes. Some data may be inaccurate - refer to your part number.
Siemens:

Siemens is a global leader in industrial automation, digitalisation, and electrification, offering products such as PLCs, drives, industrial robots, and process control systems. Known for innovation and sustainability, Siemens’ technologies enhance efficiency, safety, and performance across industries like manufacturing, energy, and healthcare.

***CJS Automation is NOT an authorised distributor of Siemens***

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