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PB-1, PB-2 - fuse disconnectors

Application:

Fuse switch disconnector with fuse insert is used to protect against the effects of short circuits in transformers, capacitor banks, cable branches and outdoor lines. The device is designed to work with fuse links in the voltage range from 3,6 up to 12 kV and short-circuit currents from 6 up to 630 A. The main task is to protect distribution devices from the effects of dynamic and thermal effects of large short-circuit currents by limiting their peak value and interrupting the current in a few milliseconds.

Advantages:

  • simple design
  • small size
  • easy to mount
  • ability to use typical fuse-links

Construction and operation:

The switch disconnectors are made of an insulating plastic plate to which contact holders fastening the fuse insert are attached. The contact holder consists of three elements: a pressure spring, a contact spring and a connection. It is possible to make a base on epoxy resin insulators.

TECHNICAL DRAWINGS:

Dimensions of PB-1
Dimensions of PB2
 

A1

A2

A3

B1

PB-1 B01

350

320

200

100

PB-1 B02

350

320

200

125

PB-1 B03

350

320

200

82

PB-1 B04

330

300

180

52

PB-1 B05

270

240

120

52

PB-1 B06

300

270

145

82

All technical data presented in the catalog can be changed due to technological progress.

Declarations of conformity:

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