High-Performance NVR6V-500X HVDC Relay - 500A Contactors from China Suppliers & Factory for Electric Vehicles and Energy Storage
NVR6V-500X DC Relay Overview
The NVR6V-500X DC relay is a high-performance DC contactor with a rated current of 500A. It adopts ceramic sealed arc extinguishing technology and supports voltage switching up to 1000Vdc. It is suitable for high-voltage DC scenarios such as electric vehicles, energy storage systems, DC fast charging stations, and industrial DC power distribution.
The product features a dual-coil design, with an activation power consumption of approximately 36W and a holding power consumption as low as about 6W. It balances fast response and energy-saving requirements, has a mechanical life of 200,000 times, and its reliability has been rigorously verified.
Model Selection & Technical Specifications
The model code follows a clear rule: NVR6V represents ceramic sealed type, 500 is the rated current, X is the series code, and the suffix defines the rated voltage (450V/750V/1000V), coil voltage (12V/24V), contact form, and lead-out configuration, facilitating customers to select according to their needs.
The main contact of this DC relay has a contact resistance of ≤ 0.5mΩ, can sustain 500A current continuously, and can withstand up to 2000A/5s in short-term. The contact material is copper alloy, with a breaking capacity of 2000A/1000Vdc (1 time).
The product can be optionally equipped with an auxiliary contact version (FC5) for contact status monitoring. The accompanying connector is compatible with brands Yazaki and THB, with compact installation dimensions (total height 95.4mm, width 95mm), weighing approximately 630g, and suitable for equipment integration in limited spaces.
Application Scenarios & Environmental Adaptability
In terms of application scenarios, the NVR6V-500X DC relay is widely used in the on-off of high-voltage circuits in electric vehicles, battery energy storage system charging and discharging switching, power module protection in DC fast charging stations, UPS DC bus control, and DC-side switches of photovoltaic inverters.
The product operates within a temperature range of -40°C to +85°C, with altitude adaptability up to 4000m (above 2000m requires reduced capacity in accordance with IEC 60947-1), and has 50G mechanical shock and 5G random vibration tolerance to ensure stable operation in vehicle-mounted and industrial vibration environments.
Installation & Safety Guidelines
When installing and using, please note: The dual-coil startup must adopt the voltage pulse rising mode, and the voltage slow rise will not cause activation; the copper bus installation must use M8 screws with a torque of 8~10N·m, with a copper bus thickness of 8~10mm, and a flatness of ≤0.1mm; the installation screws are of M5 specification, with a torque of 3~4N·m, and a need for a washer; it is prohibited to install two copper buses on the same side to prevent short circuits; the contact surface must not be coated with grease or corrosive liquids; for inductive loads (L/R ≥ 1ms), a surge absorption device must be paralleled; otherwise, it will shorten the electrical lifespan. The product complies with RoHS 2.0 standards, with pure copper as the static contact material, and it is necessary to check the oxidation condition before use after long-term storage.
This DC relay integrates ceramic arc extinguishing, dual-coil energy saving, compact and lightweight design, and high vibration resistance. It is currently the most cost-effective and reliable high-voltage DC contactor available on the market. If you need a 12V or 24V coil version, an auxiliary contact version, or special code customization, please contact Chengdu Shouchen Environmental Protection Materials Co., Ltd. for technical support and bulk quotations.
Q1: What are the main application scenarios for the NVR6V-500X DC relay?
It is widely used in high-voltage circuits in electric vehicles, battery energy storage system charging and discharging switching, power module protection in DC fast charging stations, UPS DC bus control, and DC-side switches of photovoltaic inverters.
Q2: What is the power consumption benefit of the dual-coil design?
The dual-coil design requires approximately 36W during activation, but the holding power consumption drops to as low as about 6W, balancing fast response and energy-saving requirements.
Q3: What are the installation requirements for the copper bus?
The copper bus installation must use M8 screws with a torque of 8~10N·m, a copper bus thickness of 8~10mm, and a flatness of ≤0.1mm. Installing two copper buses on the same side is strictly prohibited to prevent short circuits.
Q4: Does the NVR6V-500X support contact status monitoring?
Yes, the product can be optionally equipped with an auxiliary contact version (FC5) for contact status monitoring.
Q5: How does altitude affect the operation of this DC relay?
The NVR6V-500X has altitude adaptability up to 4000m. However, operation above 2000m requires reduced capacity in accordance with the IEC 60947-1 standard.
Q6: What coil voltage options and customization services are available?
Standard options include 12V and 24V coil versions. For customized codes, auxiliary contact versions, or technical support and bulk quotations, you can contact Chengdu Shouchen Environmental Protection Materials Co., Ltd.
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