Chint NC8-32 Contactor Series

The Chint NC8-32 AC Contactor is a 32A, industrial-grade power contactor designed for remote switching and motor control in three-phase AC systems up to 690V. As part of the NC8 series, it combines compact design, robust construction, and coil protection features, making it suitable for demanding industrial and commercial panels.

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Key Features

• 32A rated operational current (AC-3 at 415V) for motor loads

• Rated operational voltage up to 690V AC, 50/60 Hz

• Available in 3-pole and 4-pole configurations (NC8-32 and NC8-32/4)

• Typical main contact arrangement: 3 NO (3P model), 4 NO (4P model)

• Standard 1NO + 1NC auxiliary contacts, with configurable options in some variants

• AC and DC coil versions with voltages such as 24V, 110V, 230V, 415V

• TVS (Transient Voltage Suppressor) coil protection for longer coil life and better reliability

• Can be paired with a thermal overload relay (e.g., NR2 series) to form an electromagnetic starter

• Compact frame for space-saving panel or DIN rail mounting

• Conforms to IEC/EN 60947-4-1, CE, UL, and CSA for safety and performance

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Technical Specifications 

Parameter	Value
Model	NC8-32
Brand	Chint
Series	NC8 AC Contactor Series
Product Type	AC Power Contactor
Rated Operational Current (AC-3)	32 A at 415 V
Rated Operational Voltage (Ue)	Up to 690 V AC, 50/60 Hz
Rated Insulation Voltage (Ui)	Up to 690 V (typical NC8 series)
Poles (Main)	3P (NC8-32); 4P in NC8-32/4 variants
Main Contacts	3 NO (3P); 4 NO (4P model)
Auxiliary Contacts	Typically 1 NO + 1 NC (other options possible)
Coil Types	AC and DC
Typical Coil Voltage Options	24V, 110V, 230V, 415V (AC); 24V DC and others by model
Frequency	50 / 60 Hz
Utilization Category	AC-3 (motor), AC-1 (general loads)
Coil Protection	TVS (Transient Voltage Suppressor)
Mounting	Panel or DIN rail
Compatible Overload Relay	Chint NR2 series (for motor overload protection)
Certifications	IEC/EN 60947-4-1, CE, UL, CSA
Typical Applications	Motor control, heating, lighting, power distribution
Approx. Dimensions (L×W×H)	~6.0 × 9.0 × 10.0 cm
Approx. Weight	~0.55 kg

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Applications

• DOL starting and stopping of three-phase induction motors

• Motor control centres (MCCs) and industrial automation panels

• HVAC compressors, fans and pumps

• Heating and lighting distribution circuits

• OEM machinery and conveyor systems requiring frequent switching

• Power factor correction panels (when used with appropriate accessories and relays)

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What’s in the Box?

• 1 × Chint NC8-32 AC Contactor (coil voltage as ordered)

• Integrated auxiliary contacts (1NO + 1NC – model-dependent)

• Product label showing ratings and terminal designations

• Basic mounting and wiring instructions (as supplied by manufacturer)

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FAQ 

Q1. What is the current rating of the Chint NC8-32?
A1. The NC8-32 is rated 32A in AC-3 at 415V, suitable for medium-sized motor loads and power circuits.

Q2. How many poles does this contactor have?
A2. The standard NC8-32 is 3-pole (3P). A 4-pole version (NC8-32/4) is also available for applications needing 4 NO contacts.

Q3. Which coil voltages are available?
A3. The NC8-32 series is available in both AC and DC coil versions, typically 24V, 110V, 230V, and 415V AC and selected DC voltages depending on the exact model.

Q4. Can it be used with a thermal overload relay?
A4. Yes. It is designed to be used with a matching thermal overload relay (e.g., Chint NR2 series) to form a complete motor starter with overload protection.

Q5. Does the NC8-32 comply with international standards?
A5. The series conforms to IEC/EN 60947-4-1 and carries CE, UL, and CSA approvals, making it suitable for global projects.

Q6. How is the NC8-32 mounted?
A6. It supports panel/screw mounting and DIN rail mounting, allowing flexible integration into control panels and MCCs.