CHINT CJ40-1000 AC contactor

CHINT CJ40-1000 is a heavy-duty Contattore CA with a rated current of 1000A, suitable for controlling high-power motors under AC-3 duty category. It features high reliability, strong breaking capacity, and optional energy-saving design, and is widely used in power systems, industrial control, and heavy machinery. Below is the complete technical data and application selection guide.

Core Parameters & Key Specifications

Item	Valore	Remarks
Rated operational current (Ith)	1000UN	AC-1, 380V
Tensione di isolamento nominale (Ui)	1140V	Complies with IEC/EN 60947-4-1
AC-3 control capacity	380V/625kW, 660V/475kW, 1140V/600kW	Squirrel-cage motors
Conventional thermal current	1000UN	–
Coil control voltage	AC 110V/127V/220V/380V, DC 110V/220V	50Hz standard
Coil power consumption	Starting approx. 360VA, Holding approx. 91.2VA	Standard type; J-type saves 90% energy
Durabilità meccanica	3,000,000 operazioni	Unified for 630~1000A
Electrical durability	1,000,000 operazioni	AC-3 at rated conditions
Operating voltage range	Pull-in: 85%~110% Us, Drop-out: 10%~75% Us	Energy-saving type standard
Contatti ausiliari	4NO + 2NC (standard)	Rated current 16A, AC-15 380V 1.3A
Dimensioni complessive	244.5×347×287.5mm	Including arc chute
Ambient conditions	-5℃~+40℃, altitudine ≤2000m, pollution degree 3	Installation class III

Caratteristiche strutturali & Technical Advantages
Direct-acting double-breakpoint design

Main contacts made of silver alloy, excellent conductivity and arc erosion resistance

Double-breakpoint structure improves breaking capacity and reduces contact wear

High-efficiency arc extinguishing system

Arc-resistant plastic + iron grid arc chute, avoids fragility of traditional ceramic chutes

Strong breaking performance, suitable for heavy-duty frequent start/stop applications

Energy-saving version (J-type)

CJ40-1000J achieves up to 90% energy saving, greatly reduces coil power loss

AC/DC universal, compatible with various control power supplies

Reliable electromagnetic system

32-sheet iron core design reduces eddy current loss and improves suction stability

Undervoltage release protection prevents malfunction under low voltage

Application Fields & Recommendations
Typical applications

High-power motor control: tifosi, pumps, compressori, crushers, ecc.

Power systems: switching control of transformers and generators

Heavy machinery: main circuit control in metallurgy, mining, cement, paper, ecc.

Can be combined with thermal relays or electronic protection devices to form a motor starter for overload protection

Selection & installation notes

Confirm load category (AC-3/AC-4) and power to match rated capacity

Select proper coil voltage (220V/380V commonly used) to avoid conflict between control and main circuits

Auxiliary contact quantity and type must match control circuit requirements

Mounting surface inclination ≤±5° for stable operation and good heat dissipation

Recommended to use with RT17-4/1250(1000) fuse for enhanced short-circuit protection

Cross-Brand Replacement Reference

Marca	Replacement Model	Key Matching	Note
Schneider	LC1-D10000M7C	1000UN, AC-3 630kW, 380V	Auxiliary contact count may vary; verify before use
Siemens	3RT5076-6AP36	1000UN, AC-3 630kW, 380V	Mounting dimensions differ; check hole positions
ABB	A145-30-11	1000UN, AC-3 630kW, 380V	Coil power may differ; check control capacity
Delizioso	CJ40-1000	Fully compatible, same series	Direct interchangeable without modification

Ordering & Maintenance Guidelines
Ordering specification

Full model example: CJ40-1000 220V 50Hz 4NO 2NC

Clearly indicate if energy-saving type (J-type), per esempio., CJ40-1000J 380V

Maintenance suggestions

Regularly inspect main contact wear; replace if burning depth exceeds 1mm

Clean arc chute to remove carbon deposits and ensure stable arc extinguishing

Check coil temperature rise to avoid insulation aging from overheating

Preventive replacement of key parts before mechanical life expires (approx. 2.8 milioni di operazioni)

Riepilogo

CHINT CJ40-1000 contactor features 1000A rated current, 1140V insulation voltage, and 625kW control capacity (380V), balancing reliability and energy efficiency for various heavy industrial applications.

During selection, focus on load type, control voltage, and auxiliary contact configuration to ensure precise matching. For cross-brand replacement, prioritize verification of rated capacity, mounting dimensions, and auxiliary contact parameters to ensure stable operation.

Mounting Dimensions of CHINT CJ40-1000 Contactor

The mounting and overall dimensions of CHINT CJ40-1000 contactor are listed below, sourced from CHINT official manual. All units are millimeters (mm).

Core Dimension Data (Common for CJ40-630~1000)

Dimension Type	Symbol	Valore	Description
Dimensioni complessive	UN (width)	244.5	Max width including arc chute
	B (height)	347	Total height including arc chute
	C (depth)	287.5	Total depth including terminals
Mounting dimensions	UN (vertical hole distance)	210±0.575	Center distance between vertical mounting holes
	b (horizontal hole distance)	180±0.5	Center distance between horizontal mounting holes
	(diametro del foro)	11	For M10 fixing bolts
Safety clearance	F(380V)	50	Minimum surrounding clearance
	F(660V)	70	–
	F(1140V)	80	–

Installation Instructions
Mounting method: Bolt-fixed mounting only; not suitable for DIN rail (due to power rating)
Mounting surface requirements:

Inclination ≤±5° from vertical for stable operation

Surface must be flat and rigid; 4 M10 bolts recommended for diagonal fixing

Heat dissipation: Sufficient space required for ventilation; avoid close to other heat-generating devices
Wiring space: Large main terminals; allow ≥150mm operation space for cable connection and maintenance
Comparison with CJ40-630

CJ40-1000 and CJ40-630 have identical mounting dimensions and are interchangeable, differing only in main contact capacity and coil power consumption.