G300HS DCNLEV300 300A High Voltage EV DC Contactor

Name: G300HS DCNLEV300 300A High Voltage EV DC Contactor
Brand: NewTrend or OEM
SKU: 62585750691

Electricity Type:DC
Brand Name:NewTrend or OEM
Place of Origin:China
Model Number:G300H
Phase:1
Contact Voltage Rating:12 – 1000V DC
Coil Voltage:12V DC, 24V DC
Rated Current:300A
Contact Form:SPST-NO

Number of Pole

Main Circuit Rating Voltage

SKU: 62585750691 Category: DC Contactors

Description

G300H DCNLEV300 300A SPST SPST-NO 900V 1000V DC EV Relay 12Vdc 24Vdc Coil power seal High Voltage DC Contactor for EV

300A High Voltage DC Contactor Features:

DC 12-900V rated load voltage of contact circuit.
SPST-NO of contact form, 12 volt, 24 volt coil for selecting.
Main contact voltage drop at 300A, not above 100mV.
The connection of contact and coil need to be nonpolarity.
Efficient coil, retentive power is only 2-2.3W, counter electromotive force is 0V.
The joint way of the coil is very convenient.
The coil has no counter force of electromagnetism.
Compare to the similar products, this product is smallest and lightest.

300A High Voltage DC Contactor Specifications:

Model	G50H	G100H	G150H	G200H	G250H	G300H
Rated Current	50A	100A	150A	200A	250A	300A
Contact type	SPST-NO
Contact rated voltage & current	12-1000Vdc
Coil voltage	12Vdc, 24Vdc, 48Vdc
Coil power consumption	≤6W
Output Connectors	M5 Bolt and Lockwasher Connections
Connectors	Wire Leads for Control Circuit
Pickup voltage	≤75%Us
Release voltage	≤7Vdc
Pickup time	≤30ms
Release time	≤20ms
Electric life (450Vdc)	≥5000 times
Electric life (750Vdc)	≥2000 times	≥1000 times
Electric life (900Vdc)	≥2000 times	≥1000 times
Ingress Protections	IP67
Working temperature	-40 to 85°C

300A High Voltage DC Contactor Electric Diagram:

300A High Voltage DC Contactor Dimension:

Additional information

Weight	2 kg
Dimensions	25 × 25 × 25 cm
Number of Pole	1
Main Circuit Rating Voltage	12V, 24V

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for G300HS DCNLEV300 300A High Voltage EV DC Contactor.

📥

Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

📐

2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

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)?

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?

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?

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?

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?

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.