Bus duct Tap-off Box

Product Features

1.Rated voltage system

380V AC power distribution: The junction box design strictly matches the busbar trunk system standard and is suitable for three-phase four-wire/five-wire power distribution environment with a rated voltage of 380V and a frequency of 50Hz. Its conductor insulation material and structural design must meet the long-term stable operation requirements under this voltage level.

Electrical performance guarantee: Insulation resistance value ≥ 20MΩ (unit test), conductor connection point contact resistance ≤ 0.1Ω, ensuring low-loss transmission and safe isolation.

2.Interlocking safety device

Mechanical interlock protection: The branch line interface is equipped with a forced interlocking mechanism. The special operating handle must be used to release the mechanical lock before the plug box can be inserted/unplugged, effectively preventing the risk of live operation.

Electrical interlock extension: Optional electrical interlock modules (such as auxiliary contacts) can be linked with the protection circuit of the power distribution system to achieve "open-unlock" logic control and prevent arc faults caused by misoperation.

3.Handle operation type

Type Structural characteristics Applicable scenarios Operation standards

Rotational torque type Built-in torque limiting mechanism High-precision connection location Bolt tightening torque up to 40-50N·m

Folding insulation type Retractable EPDM rubber handle Narrow space maintenance Insulation level 1000V/1min.

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