CHINT NP2-BD23 Push Button

The CHINT NP2-BD23 push button is a 2-position rotary switch in the NP2 series, mainly used for signal switching and equipment control in industrial control circuits. The following is its detailed information:

1. Core Parameters and Performance
2. Electrical Specifications

Rated Voltage: Supports AC 50/60Hz, with a voltage range covering AC 6V to 415V, and DC voltage up to 250V.

Rated Current: Maximum 2.5A under AC-15 load, and maximum 0.6A under DC-13 load.

Contact Configuration: 2-position locking design, equipped with standard 2 Normally Open (2NO) contacts, which can control the on-off of two circuits simultaneously.

Protection Class: The head protection class is IP40 (without letter marking), and IP65 is optional (model suffix with “C”), which is dust-proof and splash-proof.

2. Mechanical Performance

Mechanical Life: Rotary operation design, with a mechanical life of up to 300,000 cycles, suitable for high-frequency operation scenarios.

Installation Dimensions: The diameter of the panel mounting hole is Φ22.3mm (D22 specification). The metal head type is suitable for panels with a thickness of 1-6mm, and the plastic head type is suitable for panels with a thickness of 1-4mm.

Terminal Blocks: Adopts M3.5 screw terminals with a tightening torque of 0.8-1.2N·m, supporting the connection of 0.8-2.5mm² wires.

1. Application Scenarios
2. Industrial Control

– Widely used in start-stop control and mode switching (such as manual/automatic conversion) of mechanical equipment, for example, the operation panels of machine tools and production line conveyors.

– Can replace the traditional LA18 series push buttons and is compatible with the installation dimensions of international brands such as Schneider XB2.

2. Signal Indication and Safety Control

– If the optional illuminated model (e.g., NP2-BW3361) is selected, it can integrate an LED indicator light (AC/DC 6-220V) for status display (such as power indication, operation/stop feedback).

– Often used in conjunction with emergency stop buttons (e.g., NP2-BS542) and contactors to form a complete safety control circuit.

III. Installation and Usage

1. Installation Steps

Panel Drilling: Use a Φ22.3mm drill bit to drill a hole, ensuring the panel thickness meets the requirements (1-6mm for metal head, 1-4mm for plastic head).

Fixing Method: The metal head type needs to be inserted from the front of the panel, and the base should be tightened from the rear; the plastic head type requires removing the base first, then assembling it after installation.

Wiring Example: Connect the 2 normally open contacts to the control wires L1/L2 respectively, and connect the common terminal to the power supply or load. For details, refer to the general wiring diagram of the NP2 series.

2. Precautions

– Avoid using it in an environment with humidity >90%, temperature < -5℃ or >40℃ to prevent contact oxidation or aging of plastic parts.

– Power off before wiring, ensure the terminals are not loose, and avoid short-circuit risks.

1. Certification and Compliance
2. Domestic Certification

Complies with the GB/T 14048.5 standard and has passed the CCC certification, suitable for domestic industrial scenarios.

2. International Certification

Some models have passed CE and UL certifications (e.g., NP2-BD25), which can meet the access requirements of the European Union and North American markets.

3. Quality Assurance

CHINT provides a 1-year warranty. It is recommended to purchase through authorized distributors to ensure genuine products (such as Lichuang Mall, Taobao Official Store).

1. Price and Purchase
2. Market Price

– The unit price of the basic model (2NO, non-illuminated) is approximately 2.07-8.55 RMB, and the price of the illuminated model (e.g., NP2-BW3361) is approximately 15-25 RMB, depending on the channel and batch.

– For bulk purchases (more than 100 pieces), you can negotiate the price through the CHINT official website or distributors, and the unit price can be reduced to 5-7 RMB (Contact via WhatsApp: 0086-13811255435 for negotiation).

1. Comparison with Competitors
2. Comparison with NP2-BD25

Functional Difference: BD25 is a 2-position switch with 1 Normally Open + 1 Normally Closed (1NO+1NC) contacts, while BD23 is a 2-position switch with 2 Normally Open (2NO) contacts. The selection should be based on circuit requirements.

Price Difference: The unit price of BD25 is about 10%-15% higher, but it provides more flexibility in contact combination.

2. Comparison with Schneider XB2-BD21

Compatibility: The installation dimensions are completely the same, and it can be directly replaced, but the price of NP2-BD23 is 30%-50% lower.

Performance Difference: The protection class IP65 is standard for XB2-BD21, while NP2 requires additional customization. It is recommended to prioritize XB2 for outdoor scenarios.

VII. Frequently Asked Questions (FAQs)

1. Q: Does the NP2-BD23 support 3-position operation?

– A: The BD23 has a 2-position locking design. For the 3-position function, the NP2-BD33 (3-position locking, 2NO) should be selected.

2. Q: Can it be used in a 24V DC circuit?

– A: It supports DC 24V. It is necessary to ensure that the contact capacity matches (0.6A under DC-13 load). It is recommended to select the illuminated model (e.g., NP2-BW3361 24V) to simplify wiring.

3. Q: How to verify the authenticity of the product?

– A: The packaging of genuine products is equipped with an anti-counterfeiting label, which can be verified by entering the verification code through the “Anti-counterfeiting Query” on the CHINT official website; the base of the metal head product is engraved with the “CHNT” laser logo.

VIII. Selection Recommendations

Economical Needs: Choose the basic NP2-BD23 model (2NO, non-illuminated), which is suitable for pure control scenarios, with a unit price of approximately 2.07-5 RMB.

Multi-functional Needs: Match with illuminated modules (e.g., NP2-BW3361) and contact expansion boxes (e.g., NP2-B02 dual-hole empty box) to realize status indication and multi-circuit control.

High Protection Scenarios: Customize the IP65 version (model suffix with “C”), which is suitable for environments such as dusty workshops and outdoor equipment.