Chint NP2-BD23 Push Button

The Chint NP2-BD23 push button is a self-locking rotary switch suitable for industrial control circuits.

 I. Core Parameters and Functions

 1. Electrical Performance

Rated Voltage: Up to 415V for AC (50/60Hz) and up to 250V for DC.

Rated Current: 10A (conventional heating current Ith), applicable to AC-15 and DC-13 load types.

Contact Configuration: 2-position self-locking design, providing 2 sets of Normally Open (NO) contacts, with no default Normally Closed (NC) function.

Certification Standards: Certified by CCC, compliant with the GB/T 14048.5-2017 standard. Some models may support international certifications such as CE and UL.

 2. Mechanical and Environmental Characteristics

Installation Dimensions: Suitable for panel mounting holes with a diameter of Φ22.3+0.4mm. The metal-head type supports panels with a thickness of 1-6mm, while the plastic-head type supports panels with a thickness of 1-4mm.

Protection Level: The head has a default protection level of IP40; if the model suffix includes "C", the protection level is IP65 (customization required).

Service Life: Mechanical life of 300,000 cycles and electrical life of 100,000 cycles (under AC-15/DC-13 conditions).

Structural Design: Modular combination; silver contacts with silver plating on the surface, featuring anti-oxidation property and strong electrical conductivity, and supporting the contact sliding self-cleaning function.

 II. Application Scenarios and Operation Characteristics

 1. Typical Applications

- Power switching, mode selection (e.g., manual/automatic control), and motor forward/reverse control for industrial equipment.

- Suitable for scenarios requiring multi-position control, such as machine tools, automated production lines, and distribution boxes.

 2. Operation Method

Self-locking Function: After the knob is rotated to any position, it remains locked. It needs to be rotated again to reset, preventing misoperation.

Indicator Design: No indicator light by default; if status indication is required, it can be matched with independent signal lights of the NP2 series (e.g., NP2-EV166).

Installation and Wiring: The base is fixed with M3.5 screws, the tightening torque of the terminal block is ≤0.8N·m, and it supports single-strand or multi-strand wires.

 III. Selection and Installation Precautions

 1. Model Differentiation

- NP2-BD23 is a 2-position self-locking type; for other configurations, the following models can be selected:

  - NP2-BD21 (1 Normally Open), NP2-BD25 (1 Normally Open + 1 Normally Closed), NP2-BD33 (3-position self-locking).

- A suffix including "C" indicates IP65 protection, e.g., NP2-BD23C.

 2. Installation Requirements

- Ambient Temperature: -5℃ ~ +40℃, humidity ≤50% (at +40℃). Avoid installation in flammable, explosive, or highly corrosive environments.

- Panel Hole Precision: The diameter must be strictly controlled at Φ22.3+0.4mm to avoid installation jamming caused by dimensional deviations.

- Wiring Specifications: The recommended cross-sectional area of the wire is 0.5-2.5mm² to ensure reliable electrical connection.

 IV. Market Feedback and Maintenance Recommendations

 1. User Reviews

- E-commerce platforms show that the product has a 100% positive review rate. Users report that it has a compact structure and reliable contacts, making it suitable for replacing similar imported products.

- Some users mention that attention should be paid to whether the thickness of the installation panel matches to prevent the base from being unable to be fastened due to excessive thickness.

 2. Maintenance Points

- Regularly check whether the contacts are oxidized or dusty; clean them with a dry cloth and avoid using corrosive solvents.

- If the contacts are severely worn, the contact set (e.g., BE101 Normally Open set) can be replaced individually without replacing the entire switch.

- For long-term use in high-humidity environments, it is recommended to select the IP65 model and regularly check the condition of the sealing rubber ring.

 V. Reference Price and Purchase Channels

Unit Price: Approximately 8.55-10.98 RMB per piece.

For detailed technical documents, you can visit the Chint official website to download the Instruction Manual for NP2 Series Push Buttons. With its high cost-effectiveness and reliable performance, this product is a common choice in the field of industrial control.