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:

I. Core Parameters and Performance

1. 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.

II. Application Scenarios

1. 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.

 IV. Certification and Compliance

1. 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).

 V. Price and Purchase

1. 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).

VI. Comparison with Competitors

1. 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.