40.5 kV Contact Boxes

Fully Insulated Design:Provides comprehensive live-part shielding for enhanced safety
Connection Flexibility:Available in two-hole, five-hole, ABB-compatible, and three-way variants to match diverse layouts
High Mechanical Resilience:Epoxy resin molding resists vibration, impact, and thermal cycling
Extreme Climate Adaptability:Performs reliably from –40 °C to +70 °C and up to 4000 m altitude
Superior Dielectric Stability:Engineered to withstand transient overvoltages and maintain insulation integrity
Low-Maintenance Construction:Sealed, integrated design minimizes service interventions
Universal Current Support:Covers a broad range of current ratings for varied switchgear applications

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Describe Display

The CH1A–CH6A series 40.5 kV contact boxes are precision-molded epoxy components designed for modern medium-voltage switchgear. With multiple mounting and connection options—including two-hole, five-hole, ABB-standard, and three-way models—these boxes simplify layout integration and enable secure, reliable connections.

Built to excel under harsh conditions, the CH series maintains mechanical and electrical performance across a wide temperature span and high elevations. Their fully insulated, sealed construction and robust dielectric properties ensure long-term operational safety and minimal maintenance for critical power distribution systems.

Product parameters

Model	Rated voltage	Rated current	Material	Power frequency withstand voltage	Lightning impulse withstand voltage	Operating temperature	Short-time withstand current	Ocean technology height
CH1A-40.5kv-A/B (two holes)	40.5kv	1600A/2000A	Epoxy resin	95kv/1min	118kv	-40 to +70	31.5kA/4s	≤4000m
CH1A-40.5kv-A/B (five holes)	40.5kv	1600A/2000A	Epoxy resin	95kv/1min	118kv	-40 to +70	31.5kA/4s	≤4000m
CHSA-40.5kv-A/E ( ABB)	40.5kv	1600A/2000A/2500A	Epoxy resin	95kv/1min	215kv	-40 to +70	31.5kA/4s	≤4000m
CH5A-40.5kv	40.5kv	2000A/2500A	Epoxy resin	95kv/1min	118kv	-40 to +70	31.5kA/4s	≤4000m
CH6A-40.5kv-550 (three-way)	40.5kv	2500A/3150A	Epoxy resin	95kv/1min	118kv	-40 to +70	31.5kA/4s	≤4000m

Service & Support

Our certification team consists of 85+ engineers with more than 20 years of professional experience

24/7 Service. Average emergency response time is limited to less than 12 hours

Suitable for substations, industrial power grids, new energy projects and other demanding scenarios