NSR12-BM Belt Misalignment Switch

  • Aluminum Body
  • 2NO / 2NC Snap Action Contact Structure
  • Manual Reset Option Available
  • IP65 Protection Class
  • It has CE and EAC Standards.
Get offer Share
NSR12-BM Belt Misalignment Switch

NSR12-BM Belt Misalignment Switches are designed to alarm and/or shut down a conveyor system in the event of belt drift and misalignment. They are mounted on both sides of the conveyor belt, with roller arm of the switch positioned 15 cm away from the belt. As the belt starts drifting into either side, it will first contact with the switch arm. Arm will roll without distrupting the belt. If belt continues to drift further the switch arm will rotate and actuate microswitches at specified angles.

The product is suitable for reliable long term usage in most industrial applications. Enclosure is aluminum cast and other parts are made of CuZn39Pb3 (brass). NSR12-BM series products do not require any maintenance. It offers an economical solution to short distance conveyor belt and machinery safety applications.

With the single contact model, the system will stop when the switch arm rotates until 25°. With two contact model, the switch arm will actuate the alarm switch at 15° angle. Corrective action can be taken before further misalignment. If the belt drifts until the switch arm rotates until 25°, the second microswitch will be actuated and the system will stop. Contact structure can be customized.

All models conform to CE (European Union) and EAC (Eurasian Customs Union) standards. Microswitches used in these products are VDE approved.

Technical Specifications

Enclosure Aluminium Casting
Micro Switch Rating 230 VAC 10A / AC-15, Ue 250V, Ie 3A
Output Signal (2) SDPT Stop
Cable Gland 3 x PG16
Temperature Rating -35°C to +80°C
Contact Angle 15° Alarm Model: 25°
Contact Type Snap-action
Protection Class IP65
Enclosure Color Red (RAL 3020)
Weight 1.9 kg
Mounting Orientation It is suitable for double-sided use.
Impact Rating IK09 (EN 62262)
Warranty Period 12 Months

Safety Standards

Electrical Safety EN 60947
Mechanical Safety EN 60204
Outdoor Safety EN 60529
Impact Resistance EN 62262
Certificates CE,EAC
Micro switches are VDE approved.


Without Reset Lever
Custom Contact Angles
Mounting Bracket
Custom Arm Dimensions

Model Specifications


Alarm Stop Reset
NC NO Angle NC NO Angle
NSR12-BM       1 1 25˚ Available
NSR12-BM-A01       1 1 25˚ -
NSR12-BM-A11 1 1 15˚ 1 1 35˚ Available
NSR12-BM-A11B 1 1 15˚ 1 1 35˚ -
NSR12-BM-22       2 2 25˚ Available
NSR12-BM-A02       2 2 25˚ -

Spare Parts

Model Features
KB-R-05 PG16 Cable Gland
KB-KT-05 PG16 Blind Plug
BA-06 Mounting Bracket (Can be made in custom dimensions)
TSR-11-PR Roller Arm
KB-GVD-06 Enclosure