NSR22-BM Belt Misalignment Switches


  • Cast Aluminum Body
  • It is resistant to blow and heavy conditions.
  • 2x50m Right and Left Rope Connection Distance
  • 3NO / 3NC Snap Action Contact Structure
  • IP68 Protection Class
  • It has CE and EAC Standards.
Get offer Share
NSR22-BM Belt Misalignment Switches

NSR22-BM Belt Misalignment Switch is a conveyor belt safety accessory designed to alarm and/or shut down conveyor systems in the event of a conveyor belt misalignment.It is designed to prevent damage to the belts and equipment due to the misalignment of the conveyor belt system.

NSR22-BM series of products do not require any maintenance. 

Materials used:

The body structure is covered with aluminum cast static paint that is resistant to corrosion.Shaft and Arm mechanisms are made of stainless steel.

Uses and Applications:

It is mounted on both sides of the conveyor belt to be attached to the chassis.If the belt begins to deviate, it makes contact with the roller arm causing it to spin. As more force is applied to the roller arm, it will rotate away from the normal position.

At a 15°, it will actuate the first alarm microswitch. The first microswitch will annunciate the alarm condition to the control system. If the belt continues to slip, the system is stopped by activating the second microswitch at a 30 ° position.

Safety Features:

The heavy-duty rugged design makes them suitable for most industrial applications.It can be used with only one contact mechanism without using alarm contact.

General Description:

The roller arm of the switch is placed about 15 cm away from the normal belt position.

Available modifications as per request:

-           The alarm contact structure can be added

Certifications and Standards:

The microswitch used in products is VDE approved. All KBT Electric products are produced in accordance with CE and EAC standards.

Technical Specifications

Enclosure Aluminum Casting 
Micro Switch Values 400VAC 6A / 230VAC 8A / 24VDC 10A
Output Signal​ (1) SPDT shutdown, alarm can be added upon request.
Cable Entry​ 2xM25
Temperature Rating​ -55°C - +100°C
Movement Angle​ 25° Optional : 15° and 35°
Contact Status​ Snap - Action
Protection Class​ IP68
Enclosure Color​ Red RAL 3020
Weight​ 3.9 Kg
Mounting Structure It is suitable for double-sided use.
Warranty Period 36 Months

Security Approvals

Electrical Security  EN60947
Mechanical Security EN 60204
Outdoor Security EN 60529
Current Certificate CE
Russia Market EAC
Micro Switch VDE


EX-Zone 22 / Zone 21
Reset Cancellation
Bus Security Interface
Adjustable Angle
Bmc Hard Composite Body
Mounting Feets
Arm Length and Diameter

Model Specifications List

Model Alarm Stop Reset
NC NO Angle NC NO Angle
NSR22-BM     15° 1 1 25° Avaible
NSR22-BM-A01     15° 1 1 25° **
NSR22-BM-A11 1 1 15° 1 1 35° Avaible
NSR22-BM-A11B 1 1 15° 1 1 35° **
NSR22-BM-22     15° 2 2 25° Avaible
NSR22-BM-A02     15° 2 2 25° **
NSR22-BM-A22     15° 2 2 35° Avaible
NSR22-BM-A22B     15° 2 2 35° **
NSR22-BM-33     15° 3 3 25° Avaible
NSR22-BM-A03     15° 3 3 25° **
NSR22-BM-A33 1 1 15° 2 2 35° Avaible
NSR22-BM-A33B 1 1 15° 2 2 35° **

Spare Parts Accessories List

KB-826 1NO+1NC Switch
KB-826-02 2NO+2NC Switch
KB-826-03 3NO+3NC Switch
KB-R-01 M25x1,5 Cable Gland
KB-KT-01 M25 Blind Plug
KB-4-KN 4 Pin Connector
BA-11 Connection Mounting  Foot   
KB-NGV-01 Body Cover
TSR-42-BM-EX Bearing Stainless Arm
KB-PM Reset Lever