SW150 to SW800 1P 1NO Electric Vehicle DC Contactor SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
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SW150 to SW800 1P 1NO Electric Vehicle DC Contactor SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
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SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
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SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
SW150 to SW800 1P 1NO Electric Vehicle DC Contactor
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SW150 to SW800 1P 1NO Electric Vehicle DC Contactor

Electricity Type:DC
Brand Name:NewTrend or OEM
Place of Origin:China
Model Number:SW
Phase:1
Main Circuit Rating Current:200A,400A,100A,125A,150A,250A,300A,500A,600A,800A
Electricity Type:DC
Main Circuit Rating Voltage:less than 220V DC
Number of Pole
Main Circuit Rating Voltage
SKU: 60833586516 Category: DC Contactors
  • Description
  • Additional information
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description

1P 1NO 12V 24V 36V 48V 100A 125A 150A 200A 300A 400A 500A 800A SW150 SW200 SW300 SW400 SW500 SW800 Electric Vehicle DC Contactor

 

The SW series has been designed for direct current DC loads, including motors as used on Electric vehicles, Telecom PDU’s, Battery Chargers, EV’s, Static power systems, Industrial trucks and power distribution applications.

 

Model SW50 SW100 SW125 SW150 SW200 SW300 SW400 SW500 SW800
Photo  
Rated Current 50A 100A 125A 150A 200 300A 400A 500A 800A
Contact Form 1NO, SPST (Single Pole Single Throw, Normal Open)
Contact Circuit rated Voltage 6-80V DC
Coil Voltage 12VDC, 24VDC, or other DC voltgae less than 220VDC
Coil Power 5-9W 8-12W 11-14W 11-15W
Dielectric Voltage Strength 50Hz 1000V AC 1min
Volt Drop of Main Contact < 80mV
Typical Pull-In Time
(N/O Contacts to Close)
<30ms
Typical Drop-Out Time
(N/O Contacts to Open)
<30ms
Pull-In Voltage (Coil at 20℃)  <66%Us
Drop-Out Voltage (Coil at 20℃)  5% – 30%
Mechanical life 100 thousand times
Electric life 20 thousand times
Wiring Diagram  

 

Dimension of SW50 50A 1NO 1P DC Contactor:

 

Dimension of SW100/SW125/SW150 100A/125A/150A 1NO 1P DC Contactor:

 

Dimension of SW200/SW300 200A/300A 1NO 1P DC Contactor:

 

Dimension of SW400 400A 1NO 1P DC Contactor:

 

Dimension of SW500 500A 1NO 1P DC Contactor:

 

Dimension of SW800 800A 1NO 1P DC Contactor:

Additional information
Weight 2 kg
Dimensions 25 × 25 × 25 cm
Number of Pole

1

Main Circuit Rating Voltage

12VDC, 24VDC, 36VDC, 48VDC, 72VDC, 90VDC, 110VDC

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for SW150 to SW800 1P 1NO Electric Vehicle DC Contactor.

📥
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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