NSR51-LS Series

  • Aluminum Die Casting Enclosure
  • Impact Resistant
  • Operating Microswitches at Different Angles
  • IP67 Protection Class
  • CE, EAC Standards
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NSR51-LS Series

NSR51 Heavy Duty Industrial Limit Switches are designed to ensure safety of machinery and industrial equipment under tough working conditions. They are mounted on both sides of the conveyor belts and used to alarm and shut down systems. Reduces downtime and saves maintenance costs. Due to its design with maximum security in mind, the product is very durable and resistant to environmental effects. Anti-static powder coated metal enclosure is resistant against corrosion, heavy impacts and high temperatures. Shaft mechanisms are made of stainless steel. NSR51 series products do not require any maintenance.

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

Standard Version Technical Specifications 

Enclosure Aluminium Casting
Micro Switch Rating 250 VAC 15A
Output Signal (1) SPDT shutdown, alarm can be added upon request.
Temperature Rating for High Temp Version -20°C to +80°C
Contact Type Snap-action
Protection Class IP67
Weight 2.27 kg
Mounting Orientation It is suitable for double-sided use.
Contact Angles Alarm at 12°, stop at 45°
Mechanical Life 5,000,000 Switching
Warranty Period 24 Months

High Temperature (HT) Version Technical Specifications 

Enclosure Aluminium Casting
Micro Switch Rating 250 VAC 10A
Output Signal  (1) SPDT shutdown, alarm can be added upon request
Temperature Rating for High Temp Version -20°C to +180°C
Contact Type Snap-action
Protection Class IP67
Weight 2.27 kg
Mounting Orientation It is suitable for double-sided use.
Contact Angles Alarm at 12°, stop at 45°
Mechanical Life 5,000,000 Switching
Warranty Period 24 Months

Security Approvals

Electrical Security  EN60947-5-1  
Mechanical Security   EN 60204
Outdoor Security EN 60529
Current Certificate CE
Russia Market EAC
Micro Switch VDE

Options

Mounting Bracket
Signal Light and Alarm
Alarm
 

Model Specifications List

Product Code Format Bidirectional
Operation		 Movement to
Right Side		 Center
Neutral		 One-Step
Operation		 Two-Step
Operation		 Automatic
Return		 Forced
Return

Circuit

Structure
SPDT
NSR51-LS-00 Vertical Roller Arm x     x   x   x1
NSR51-LS-01 Vertical Roller Arm x     x   x   x2
NSR51-LS-02 Vertical Roller Arm x     x   x   x1
NSR51-LS-03 Vertical Roller Arm x     x   x   x2
NSR51-LS-61 Vertical Roller Arm x       x x   x2
NSR51-LS-63 Vertical Roller Arm x       x x   x2
NSR51-LS-91 Vertical Roller Arm     x     x   x2
NSR51-LS-93 Vertical Roller Arm     x     x   x2
NSR51-PR-5210 Perforated Arm   x       x   x1
NSR51-PR-5211 Perforated Arm   x       x   x2
NSR51-LS-5530 Double Roller Arm             x x1
NSR51-LS-5531 Double Roller Arm             x x2
NSR51-BM-420  Roller Arm x       x x   x2

"HT" is added for High Temperature versions. Example: NSR51HT-LS-91, NSR51HT-BM-420

Features

Resistant to heavy conditions.
The enclosure uses aluminum alloy die cast
Mounting flanges are resistant to intense force.
Resistant to high temperatures and instantaneous temperature changes
The actuator part has a large total travel (TT), so it can be used as a switch
High mechanical strength can be fully utilized
 Excellent environmental resistance

Protective structure: The oil seal on the shaft and the O-ring seal on the cover provide an exterior immersion,

oil and dust resistant structure.
It has high durability against high vibration and shock performance
It is mechanically long-lasting with roller bearings.

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