Product Spotlight: Durakool CHV500 HVDC Contactor for EV Charging and Energy Storage
- Rion Buswell
- Aug 4
- 2 min read
Welcome to our first Weekly Product Spotlight at CTM Marketing, Inc.
As a dedicated technical sales agency and component sales representative serving the Rocky Mountain region, we connect design engineers with high-performance components built for mission-critical applications. Today, we put the spotlight on a standout component engineered for severe high-voltage DC environments: the Durakool CHV500 Series HVDC Contactor.
Engineering High-Voltage Power Switching
Modern high-power systems demand robust isolation, rapid arc extinction, and exceptional long-term reliability. Whether you are designing ultra-fast electric vehicle (EV) chargers, multi-megawatt battery energy storage systems (BESS), or heavy-duty DC power distribution grids, standard electromechanical relays fall short under high DC voltage and current.
The Durakool CHV500 is purpose-built to handle these extreme demands. Designed specifically for high-voltage DC switching, it provides engineers with a reliable, compact, and highly efficient solution for system main disconnects and charging infrastructure.
Core Technical Specifications
The CHV500 Series delivers heavy-duty electrical performance in a compact footprint. Here are the core specifications:
Part Number: CHV500 Series
Continuous Current Rating: 500A continuous thermal current
Max Switching Voltage: 1500VDC
Max Breaking Current: 2500A at 800VDC (one-time break capability)
Contact Arrangement: SPST-NO-DM (Single Pole Single Throw, Normally Open, Double Make)
Coil Control Options: 12VDC or 24VDC with standard dual-coil economizer
Power Terminals: Non-polarized (accommodates bidirectional current flow)
Operating Temperature Range: −40°C to +85°C
Altitude Rating: Up to 4000m (with minimal derating above 3000m)
Advanced Design-In Features
1. Ceramic Arc Chamber & Inert Gas Sealing
At voltages up to 1500VDC, interrupting high DC current creates intense electrical arcs that can destroy standard contacts. The CHV500 utilizes a hermetically sealed ceramic arc chamber filled with inert hydrogen/argon gas, paired with magnetic arc blowouts. This combination elongates and extinguishes the arc rapidly, preventing contact oxidation over the product lifecycle: a critical factor for achieving 10+ year field reliability in unattended installations.
2. Dual-Coil Economizer
Thermal management is vital in dense power cabinets. The CHV500 comes standard with an integrated dual-coil economizer. After the initial pull-in phase, internal circuitry drops coil power consumption to under 5W, significantly reducing thermal dissipation and extending operational longevity.
3. Non-Polarized Power Terminals
Engineering flexibility matters. The CHV500 features non-polarized M6 female power terminals. Current can flow in either direction, simplifying layout design in bidirectional energy storage and regenerative braking applications.
Target Applications
The CHV500 Series is engineered for demanding industrial and automotive power architectures:
EV Charging Stations: Main DC output contactors in 400V to 1000V+ ultra-fast DC fast chargers.
Battery Energy Storage Systems (BESS): Rack-level and system-level battery disconnect safety switches.
DC Power Distribution: High-voltage industrial microgrids and renewable energy inverter isolation.
Commercial & Heavy-Duty EVs: Traction battery disconnection and auxiliary high-voltage distribution.
Partner with Expert Manufacturers Representatives
Navigating high-voltage architecture requires precise component selection and robust engineering support. As experienced manufacturers representatives, CTM works closely with engineering teams throughout Arizona, Colorado, Utah, New Mexico, Idaho, Montana, and Wyoming to streamline your design-in cycle.
Need detailed datasheets, application notes, or evaluation samples for the Durakool CHV500? Let’s Chat!
Contact CTM Marketing today to request samples or discuss your upcoming high-voltage project requirements with our technical team.
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