CHINT NP9 Push Button Switch

Name: CHINT NP9 Push Button Switch
Brand: CHINT

Description

CHINT NP9 Push Button Switch is a high-performance modular command and signaling device designed for low-voltage electrical circuits. Renowned for its compact footprint and exceptional durability, the NP9 series is the preferred choice for engineers requiring reliable human-machine interface solutions in dense distribution boards.

1. Product Overview

The NP9 series represents CHINT’s commitment to industrial precision. These modular push buttons are engineered for AC 50Hz/60Hz circuits with rated voltages up to 230V. Unlike standard switches, the NP9 features a distinctive ergonomic design and visual clarity, making it ideal for control pulses and interlocking in complex automation systems.

2. Main Features

Modular Design: Standardized 18mm width (1P size), perfectly compatible with standard DIN rail distribution boxes.
High Mechanical Endurance: Rated for up to 100,000 operations, ensuring longevity in high-frequency control environments.
Superior Contact Reliability: Utilizes advanced contact materials to ensure low resistance and stable signal transmission.
Visual Identification: Available in multiple button colors (Red, Green, etc.) for clear functional differentiation (Start/Stop/Emergency).
Safe Terminals: Finger-safe terminal design to prevent accidental contact during maintenance.

3. Technical and Application Notes

The NP9 is specifically optimized for DIN rail mounting alongside MCBs and RCCBs. When installing, ensure the control wire cross-section matches the terminal capacity (up to 6mm²). It is designed for indoor use; for harsh environments, ensure it is housed within a cabinet with the appropriate IP rating.

4. Typical Applications

Industrial Automation: Remote control of magnetic starters, contactors, and relays.
Building Management: Manual override for lighting circuits and ventilation systems.
OEM Equipment: Integration into customized control panels and machinery consoles.
Power Distribution: Status signaling and manual control in LV switchgear.

5. Ordering Support

To ensure the correct configuration, please specify the contact type (Normally Open/Normally Closed) and button color when placing your order. We offer volume support for large-scale switchboard projects and global distribution.

6. Product Catalog

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for CHINT NP9 Push Button Switch.

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Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

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2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Voltage & Load Sizing

How to verify rated operational voltage, frequency, and load duty cycle?

Verify that the nominal line voltage (AC 230V single-phase or 400V/415V/690V three-phase at 50/60Hz, or DC voltage ratings) falls within the continuous maximum operating limits of the device. Check duty cycle ratings (continuous vs intermittent duty) to ensure thermal stability under full load.

Protection & Environment

What ingress protection (IP Rating) and environmental enclosures are recommended?

For clean indoor electrical rooms, standard IP20 modular DIN-rail housings are recommended. For outdoor, industrial washdown, or dusty environments, mount components inside weatherproof enclosures rated IP65/IP66 with UV-resistant polycarbonate or powder-coated steel enclosures equipped with compression cable glands.

Selectivity & Grading

How to ensure upstream and downstream coordination in power distribution boards?

Ensure proper discrimination by grading current thresholds and tripping time delays: upstream devices should have higher current ratings and intentional short-time delays (Class S), allowing downstream branch MCBs to clear localized faults without blacking out the entire facility.

Installation & Mounting

What mounting rails, busbars, and spatial clearances are required?

Components mount on standard symmetrical 35mm DIN rail (EN 60715 / TH35-7.5) or backplate screw fixings. Maintain recommended top/bottom ventilation gaps (typically 30–50mm) to ensure unrestricted air convection, and use standard pin/fork comb busbars to minimize contact resistance and wiring errors.

Conductor & Torque Sizing

What conductor sizes and terminal tightening torques should be applied?

Select copper or aluminum conductor cross-sections complying with IEC 60364-5-52 current-carrying capacity tables based on continuous load. Always use a calibrated torque screwdriver or torque wrench to tighten terminal screws to the manufacturer-specified torque to prevent hot-spot degradation and loose connections.