The CH series 12kV epoxy resin contact boxes are precision-molded insulation components designed for medium-voltage switchgear systems. With rated currents ranging from 630A to 4000A, and high withstand levels of 42kV/1min power frequency and 75kV lightning impulse, these components ensure safe and reliable current transmission.
Engineered for versatility, the series includes standard, reverse-mounted, and T-type configurations to adapt to a variety of electrical cabinet structures. The use of high-performance epoxy resin provides excellent thermal endurance, mechanical strength, and insulation integrity, making them ideal for harsh environments and high-fault-level installations.
| Model | Rated voltage | Rated current | Material | Power frequency withstand voltage | Lightning impulse withstand voltage | Operating temperature | Short-time withstand current |
| CH6-12kv-280 | 12kv | 3150-4000A | Epoxy resin | 42kv/1min | 75kv | -20 to +40 | |
| CH7-12kv | 12kv | 630A/1250A/1600A | Epoxy resin | 42kv/1min | 75kv | -25 to +55 | 20ka/25ka(4s) |
| CH9-12kv-256 (M20 in the middle, M10 on the side) | 12kv | 1250A-1600A | Epoxy resin | 42kv/1min | 75kv | -30 to +70 | 25kA/4s |
| CH9-12kv-256 (M12 in the middle, 4-M10 on the side, turn 45°, hole spacing 60Φ) | 12kv | 1250A-1600A | Epoxy resin | 42kv/1min | 75kv | -30 to +70 | 25kA/4s |
| CH9-12kv-256 (M12 in the middle, 4-M10 on the side, turn 90°, hole spacing 60Φ) | 12kv | 1250A-1600A | Epoxy resin | 42kv/1min | 75kv | -30 to +70 | 25kA/4s |
| CH10-12kv-150/ I reverse installation (M10 in the middle) | 12kv | 630A | Epoxy resin | 42kv/1min | 75kv | -25 to +70 | 20kA/4s |
| CH10-12kv-150/ II reverse installation (M10 in the middle) | 12kv | 630A | Epoxy resin | 42kv/1min | 75kv | -25 to +70 | 20kA/4s |
| CH11-12kv-150/tee | 12kv | 630A/1250A | Epoxy resin | 42kv/1min | 75kv | -30 to +70 | 20ka/25ka(4s) |
| CHJ14-12kv | 12kv | 1600A-3150A | Epoxy resin | 42kv/1min | 75kv | -30 to +70 | 20kA /25KA /31.5KA (4s) |
| CHJ22-12kv | 12kv | 630A/1250A/1600A | Epoxy resin | 42kv/1min | 75kv | -40 to +70 | 20kA/4s |
| CHJ26-12kv (190 tee) | 12kv | 630A/1250A | Epoxy resin | 42kv/1min | 75kv | -40 to +70 | 20kA/4s |
