Chint Emergency Stop Button NP2-BS542

Basic Specifications

Model: NP2-BS542

Tip: Mushroom Head Self-locking Emergency Stop Button

Head Size: φ40mm (40mm in diameter) red mushroom head

Mounting Hole Diameter: 22mm (standard industrial mounting hole)

Configurare contact: 1NC (Single Normally Closed)

Clasa de protectie: IP40 (dust-proof, protection against solid foreign objects)

Reset Method: Rotational reset (auto-pop after clockwise rotation)

With Indicator Light: Nu

Electric Parametrii

Tensiune nominală de izolație: 600V

Rated Operating Voltage:

– AC: 50/60Hz, max. 415V

– DC: max. 250V

Rated Impulse Withstand Voltage: 6kV

Rated Operating Current: 4.5O (resistive load)

Viața mecanică: Aproximativ 1,000,000 operațiuni

Viața electrică: Aproximativ 100,000 – 500,000 operațiuni (under different load conditions)

Temperatura ambiantă: -20℃ ~ +55℃

Certification: CCC Certification

Structual Features

Mushroom Head Design: 40mm large size for quick operation in emergency situations

Self-locking Function: Locks when pressed, requiring manual rotational reset to prevent accidental recovery

Material: Red plastic head, metal base

Standard Interface: Adopts universal 22mm mounting hole diameter, compatible with various industrial control cabinets

Scenarii de aplicare

Machine Tool Equipment: Various machining centers, lathes, milling machines, etc.

Packaging Machinery: Production line packaging equipment, carton sealing machines, etc.

Conveying Equipment: Belt conveyors, hoists, etc.

Elevator Control: Emergency stop device on elevator control panels

Automated Production Lines: Safety protection for various automated equipment

Other Industrial Equipment: Various machinery requiring emergency stop functionality

Installation and Operation Instructions

Installation Steps:

1. Drill a 22mm round hole on the control cabinet panel
2. Insert the button from the front of the panel
3. Tighten the fixing nut (or side screws) from the back of the panel
4. Connect the control wire: Connect the normally closed contact (NC) of the button to the control circuit

Operation Methods:

Emergency Stop: Press the mushroom head, the button locks, the circuit disconnects, and the equipment stops running

Reset Operation: Rotate the button head clockwise (aproximativ 90 degrees), the button pops back automatically, and the circuit recovers

Referință de selecție

Other models in the NP2 series emergency stop buttons are available for selection based on requirements:

NP2-BS544: 2NC (Dual Normally Closed), higher safety, suitable for critical equipment

NP2-BS545: 1NU + 1NC (One Normally Open + One Normally Closed), can control multiple circuits simultaneously

Keyed Version: NP2-BS542 + Key Box, requires a dedicated key for reset to prevent unauthorized recovery

Preț de referință

– Unit Price: Aproximativ 6 – 10 RMB

– Version with Protection Box or Key: Aproximativ 25 RMB

Rezumat

Chint NP2-BS542 is a standard industrial-grade emergency stop button, featuring a 40mm red mushroom head, 1NC normally closed contact, IP40 protection, and rotational reset function. It is suitable for the safety protection of various industrial equipment. As the “last line of defense” for equipment, it can quickly cut off the power supply in emergency situations to ensure the safety of personnel and equipment. For higher safety requirements, the dual normally closed (NP2-BS544) or keyed version can be considered.

Nota: The above parameters are derived from Chint’s official documents and industrial electrical platforms. Please refer to the product manual for specific use.