Chint NC1-9511 AC Contactor

Rated Current: 95あ (for AC-3, 400V utilization category)

Main Contacts: 3いいえ (3 normally open main contacts)

Auxiliary Contacts: 1NO+1NC (1 normally open + 1 normally closed)

Pole Configuration: 3P (three-phase)

Control Power: 45kW (at AC-3, 400V)

Coil Voltage: Multiple Options

AC (no suffix): 24V, 36V, 48V, 110V, 127V, 220V, 230V, 240V, 380V, 400V, 415V, 440V, 480V, 660V

DC (with Z suffix): 24V, 36V, 48V, 110V

Frequency: 50/60Hz

Rated Insulation Voltage: 690V

Protection Class: IP20 (finger-proof and dust-proof)

Ambient Temperature: -5℃~+40℃

Altitude Limit: ≤2000m

1. Model Interpretation

NC1 95 11 (Coil Voltage)

├──┬──┬──┬──┬──

│ │ │ └─Auxiliary Contacts: 11 = 1NO+1NC

│ │ └─Main Contact Rating: 95 = 3NO main contacts

│ └─Rated Current: 95あ

└─Series Code: NC1 Series

Ⅲ. Product Features and Applications

1. Core Functions

Remote Control: Controls the on/off of high-power circuits via low-voltage signals

Frequent Operation: Suitable for frequent starting, stopping, forward and reverse control of electric motors

Overload Protection Compatibility: Can be combined with thermal overload relays (例えば, NR2 series) to form electromagnetic starters, protecting circuits from overload damage

2. 典型的なアプリケーションシナリオ

Industrial Machinery: Motor control of various production equipment (例えば, fans, water pumps, compressors)

自動生産ライン: Equipment start-stop and sequence control

Construction Machinery: Power control of large-scale equipment such as tower cranes and mixers

Agricultural Machinery: Irrigation systems and grain processing equipment

Commercial Facilities: Air conditioning systems and elevator control

1. Technical Details

Utilization Category Explanation

AC-3: Starting and breaking of squirrel-cage induction motors during operation (the most common application scenario for 接触器)

AC-4: Starting, plugging braking, reverse operation or jogging of squirrel-cage induction motors

Connection Method: Top-in and bottom-out (standard industrial wiring method)

Mounting Method: 35mm standard DIN rail mounting, suitable for industrial control cabinets

Wire Specification: It is recommended to use copper wires with appropriate cross-sectional area to ensure current-carrying capacity

1. Related Models and Price Reference
2. Other Specifications in the Same Series

NC1-0910/0901: 9あ, auxiliary contacts 1NO or 1NC

NC1-2510/2501: 25あ, auxiliary contacts 1NO or 1NC

NC1-6511: 65あ, auxiliary contacts 1NO+1NC

NC1-8011: 80あ, auxiliary contacts 1NO+1NC

2. Price Range (Reference as of December 2025)

NC1-9511 Series: 200-500 RMB per unit (varies by coil voltage and procurement channel)

DC Type (NC1-9511Z Series): Slightly higher than AC type, about 10-15% higher

1. Selection Suggestions
2. Select According to Load Current: Ensure the rated current of the contactor is ≥ the rated current of the load; generally, choose one size larger

例: For controlling a 45kW/380V three-phase motor (rated current approx. 90あ), NC1-9511 is an optional model

2. Select Coil Voltage According to Control Power Supply:

Commonly used in industrial control: 220V, 380V

Safety voltage scenarios: 24V, 36V

DC control: Select models with Z suffix (例えば, NC1-9511Z-24V)

3. Select Auxiliary Contacts:

For status indication only: Choose 1NO (例えば, NC1-9510)

For interlock control: Choose 1NO+1NC (例えば, NC1-9511)

Ⅶ. まとめ

Chint NC1-9511 is a standard AC contactor with 3P configuration and 95A rated current, equipped with 3 normally open main contacts and 1 pair of auxiliary contacts. It is suitable for various industrial three-phase motor control scenarios, especially for motor loads around 45kW. Its modular design, multiple coil voltage options and wide adaptability make it a commonly used basic control component in industrial control systems.

Seven Core Advantages of Chint Contactors

1. Safe and Reliable Technical Design

Excellent Arc Extinguishing Capacity:

Adopts magnetic arc extinguishing design to ensure safety when breaking high voltage (DC1500V)

Equipped with short-circuit resistant electric repulsion structure, with short-circuit current resistance up to 8000A/5ms, greatly improving system stability

The tightening torque of main circuit terminals below 100A is increased by more than 40%, avoiding loosening and poor contact caused by vibration

Multiple Safety Protections:

Products have passed international certifications such as UL, CE, CSA, TÜV, complying with IEC and GB/T standards

Non-polar design of the main circuit enables flexible connection and reduces the risk of misoperation

Protection class is upgraded to IP50 (for some series), far exceeding the standard IP20, with stronger dust-proof performance

1. Excellent Performance

Ultra-long Service Life:

Electrical life up to 1.25 million times and mechanical life up to 10 million times, greatly reducing replacement frequency and maintenance costs

Contacts are made of high-purity silver alloy, resistant to electric corrosion and wear, maintaining stable performance even under frequent operation

High Energy Efficiency:

Adopts dual-coil energy-saving technology, reducing energy consumption by about 85% compared with traditional contactors while eliminating electromagnetic noise

Since 2025, all series of products meet the energy efficiency Class 1 requirements, providing LCA carbon footprint reports and complying with international carbon regulations such as EU CBAM

Ⅲ. Strong Environmental Adaptability

Wide Temperature Range Operation:

Operating temperature range up to -25℃~+55℃ (for some series), far exceeding the industry standard (-5℃~+40℃), suitable for extreme environments

Humidity tolerance: Relative humidity ≤50% at the maximum temperature of +40℃; up to 90% in low-temperature environments, suitable for humid areas

Diversified Application Scenarios:

Full power coverage from 0.12kW to 630kW, meeting the needs of industrial automation, building electrical, new energy and other fields

Specifically optimized for the Chinese power grid environment (large voltage fluctuations and frequent load changes), with stronger stability

1. Advantages of Intelligence and Modularity

Intelligent Monitoring Function:

Intelligent series integrate remote control, timed switching and load monitoring, supporting WiFi/4G/NB-IoT communication, with indoor coverage of 100 meters and outdoor coverage of 300 メートル

Built-in multi-parameter sensors (temperature, vibration, electrical parameters, mechanical status), with intelligent diagnosis accuracy of over 95%

Convenient Modular Design:

Standard 35mm DIN rail mounting, occupying small space and facilitating quick replacement

Auxiliary contacts, mechanical interlocks and other modules can be flexibly added without replacing the whole unit, reducing expansion costs

“Hot-swappable” design (for some high-end series), allowing maintenance without power off and improving system continuity

1. Cost-Effectiveness Advantage

High-end Domestic Quality:

Compared with products of the same performance from international brands (シュナイダー, ABB), the price is 30-50% lower while maintaining similar quality

Cost advantages brought by large-scale production, leading the industry in cost-effectiveness, suitable for budget-sensitive projects

Long-term Return on Investment:

Ultra-long service life design reduces replacement frequency, lowering the comprehensive life cycle cost by more than 40%

Energy-saving features significantly reduce long-term operating electricity costs, especially suitable for equipment running continuously for 24 hours

One-stop Solution:

Provides full life cycle services from selection and installation to maintenance, with technical teams on standby for support at any time

Free provision of product information, technical consultation and on-site guidance, lowering the technical threshold for customers

Ⅶ. Market Leadership Position

Industry Leadership:

The market share of three-pole AC contactors reaches 28.7%, ranking first in the industry for five consecutive years, with annual sales exceeding 10 million units

The market share in China’s low-voltage electrical appliance market is about 15.5%, second only to Schneider, ranking first among domestic brands

Full Industrial Chain Advantage:

A complete industrial chain from components to complete sets of equipment ensures product consistency and supply stability

Strong R&D investment, building a multi-dimensional technological innovation system, and continuously launching new products that meet market demands

With safe and reliable design, excellent performance, strong environmental adaptability, advantages of intelligence and modularity, high cost-effectiveness and perfect service system, Chint contactors have become one of the preferred brands in the field of industrial control at home and abroad. Choosing Chint not only ensures high-quality products, but also provides long-term stable operation guarantee and comprehensive technical support, making it an ideal choice for industrial electrical control systems.