The Chint NC8-170 AC Contactor is a high-capacity 170A industrial power contactor designed for reliable switching, motor control, and remote circuit operation. With a robust 3-pole design and wide coil voltage compatibility, it is built for demanding industrial environments such as HVAC systems, MCC panels, pump control, and heavy machinery. Certified to IEC/EN 60947-4-1 standards, it ensures safe, long-life performance.

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Key Features

• 170A AC-3 rated for heavy-duty motor control

• 3-pole, 3NO main contact configuration

• Rated operational voltage up to 690V AC

• Available in multiple AC/DC coil voltage options

• Built-in 2NO auxiliary contacts for control circuits

• Modular design supports additional auxiliary blocks, surge suppressors, delay modules, interlocks

• Compatible with Chint thermal overload relays for DOL starters

• Strong mechanical & electrical endurance for frequent switching

• Fully compliant with IEC/EN 60947-4-1 safety and performance standards

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Technical Specifications 

Parameter	Details
Model	NC8-170
Brand	Chint
Rated Current (AC-3)	170A
Poles	3P
Main Contacts	3NO
Auxiliary Contacts	2NO
Coil Type	AC/DC operational
Coil Voltage Options	110–127V / 220–240V / 380–415V
Rated Operational Voltage (Ue)	Up to 690V AC
Rated Insulation Voltage (Ui)	690V
Frequency	50/60 Hz
Mounting	Panel or DIN rail (frame dependent)
Standards	IEC/EN 60947-4-1, CE
Overload Relay Compatibility	Supports NR2/NR8 series
Applications	Motor starters, MCC panels, HVAC, compressors
Weight	4.5–6.0 kg
Dimensions	22 × 18 × 20 cm

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Applications

• Industrial motor control (frequent start/stop)

• MCC & electrical distribution panels

• HVAC, chillers, and compressor units

• Pumps, blowers, conveyor systems

• Remote circuit switching for high-current loads

• Automation & machinery control systems

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What’s in the Box?

• 1 × Chint NC8-170 Contactor

• Integrated auxiliary contact set (2NO)

• Rating label & wiring diagram

• Manufacturer QC sticker

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FAQ 

Q1. What is the current rating of the NC8-170?
170A (AC-3 duty).

Q2. Does the NC8-170 support DC coils?
Yes, certain variants come with DC coil options.

Q3. Can overload relays be connected?
Yes, the NC8-170 is compatible with Chint NR2/NR8 overload relays.

Q4. How many auxiliary contacts are included?
Standard configuration includes 2NO auxiliary contacts.

Q5. Can it be used for frequent motor starting?
Yes, it is specifically designed for heavy-duty cyclic motor operations.

Q6. Is panel or DIN mounting possible?
Yes, depending on the frame size, panel mounting is standard.