CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
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CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A
CHINT NJG2-SDA032/TDA032/SDD032 Solid State Relay
CHINT NJG2-SDA032/TDA032/SDD032 Solid State Relay
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DC MCCB (160A 200A 250A)
DC MCCB (160A 200A 250A)

CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A

Size:Subminiature
Brand Name:Chint
Theory:Solid State Relay
Place of Origin:China
application:General Purpose
Model Number:NJG2
Contact Load:Low Power
Protect Feature:Sealed
Phase:Single phase, Three phase
Input voltage:DC 3V ~ 32V, AC 90 ~ 250V
Output voltage:AC 220V, 380V, DC 12~250V
Max load:10A, 15A, 20A, 25A, 30A, 40A, 60A, 80A, 100A, 120A
Load Current (A)
Phase
Input (Control)
Output (Load)
SKU: 1770402191882854400 Category:
Description

Chint NJG2 Single Phase Three Phase 25A 40A 60A 80A 100A input DC AC output AC 220V 380V DC 12V to 250V CHNT Solid State Relay

   

Chint NJG2 solid state relay is a switching device that uses semiconductor devices instead of contacts. Optically isolated between the input and output, when a control signal is applied to the input, the output can be changed from an off state to an on state.

Chint NJG2 solid state relays are widely used in automatic control fields such as electric furnace heating constant temperature system, numerical control machinery, plastic machinery, food machinery, packaging machinery, textile machinery, petrochemical equipment, entertainment facilities, etc., suitable for resistive, inductive and capacitive loads. The input control voltage is DC3~32V, AC90~250V, and the output currents are 10A, 15A, 20A, 25A, 30A, 40A, 60A, 80A, 100A, 120A, the output voltage ranges are AC24~240V, AC40~480V, DC12~250V respectively.

 

Temperature range: -5℃ ~ 40℃
Humidity range: +25℃ ~ 85%
Installation method: device type

 

Additional information
Load Current (A)

25A, 40A, 60A, 80A, 100A
Phase

1-Phase, 3-Phase
Input (Control)

DC 3-32V, AC 70-280V
Output (Load)

AC, DC
Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for CHINT NJG2 1-Phase 3-Phase Solid State Relay 25A-100A.

📥
Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.
Request Official Datasheet (PDF)
📐
2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.
Request CAD Model
Certified Standards: IEC 60898-1, IEC 60947-2, CE, RoHS, ISO 9001:2015
Manufacturer: Shanghai Newtrend Electric Co., Ltd. (Global Export Compliance)
Engineering Support: 24-hour response for custom voltage ratings, auxiliary contacts, and technical consulting.
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.

AC-1 / AC-3 Duty

How to calculate contactor rating based on motor power and utilization categories (AC-1 vs AC-3 vs AC-4)?

A

AC-3 rating applies to standard squirrel-cage motor starting and stopping during normal run (starting current 5–7x In). For non-inductive or purely resistive heating loads, use the higher AC-1 rating. For severe inching, jogging, and plugging applications (AC-4 duty), derate the contactor or upsize by 1 to 2 frame sizes to prevent contact erosion.

Coil Voltage Selection

How to choose the correct control coil voltage, frequency, and electronic wide-voltage options?

A

Standard AC coils include 24V, 48V, 110V, 220V/230V, 380V at 50/60Hz. For DC control loops or PLC outputs, specify DC coils or electronic wide-range AC/DC coils (e.g. 100V–250V AC/DC) which feature built-in surge suppression, low holding power consumption, and immunity to voltage dips.

Overload Coordination

How to size and coordinate the matching thermal overload relay (TOR) for Type 2 protection?

A

Select a thermal overload relay whose current setting range straddles the motor full-load current (FLA). Set the dial precisely to 1.0x motor nameplate FLA. For IEC 60947-4-1 Type 2 coordination, pair the contactor and relay with backed-up upstream fuses or fast-acting MCB/MCCB to prevent welding under fault conditions.

Auxiliary & Interlocks

What auxiliary contact blocks and mechanical interlocks can be added for motor reversing?

A

Units feature built-in 1NO or 1NC auxiliary contacts, expandable with top-mounted 2-pole or 4-pole auxiliary contact blocks (F4 / AX) and pneumatic timer delay blocks. For forward/reverse motor starters or star-delta starter assemblies, add side-mounted mechanical interlock units (MI) with electrical interlocking.

Ambient & Altitude Derating

How do ambient temperature and installation altitude affect contactor performance?

A

Standard ratings are calibrated for -5°C to +40°C. For ambient temperatures exceeding 55°C or altitudes above 2000m (where reduced air density diminishes heat dissipation and dielectric insulation), derate operational current by 2% per 100m above 2000m and verify insulation voltage limits per IEC standards.

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