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Solid State 4RU Rack Mount Static Transfer Switch | Model B4

Supplier: i-STS

Model B4 4RU Rack Mount Switch includes all the features of the B2 with up to 160A of switching capacity, the 4RU static transfer switch is ideal for those looking for more power in a rack mount mode

Price Guide: POA

The Range:

Rated typically from 63 to 160 Amperes in either single or 3 phase, 2, 3 or 4 pole configurations complete with integrated maintenance bypass and power isolation facilities.

Screw cage terminals at the rear of the fixed portion (incorporating the maintenance bypass switch) enable connection of input and output cables of up to 50mm2, providing flexible, permanent connections to your power input output  infrastructure, PDU, or load distribution.


A graphic LCD and LED mimic provides the user with an easy to navigate hierarchical real time information and control interface.

The colour touch screen backlit LCD provides a real time mimic/status screen, real time plain English alarm/event listing , full operating variables on single screen for all input and output quantities and audible alarm to provide instant recognition of the STS state.

Model B4 Solid State 4RU Rack Mount Statci Transfer Switch Key Features 

  • Maintenance Bypass at rear
  • Hot socket field replaceable power module
  • Input isolators
  • Break before make transfers
  • Break time < ¼ Cycle
  • Will not transfer faults
  • 4RU Design

Technical Data

  • Current: 80 to 160 Amps
  • Phases: Single or Three phase
  • Dimensions: 177mm x 483mm x 650mm (H x W x D)
  • Weight: 25-35Kg
  • Fault Current Setting: 300% Amperes peak (transfer lock-out)

Available options 

  • 63 / 80 / 125 / 160 Amp current capacity
  • 2-pole, single-phase
  • 3-pole, 3-phase
  • 4-pole, 3-phase
  • IP rated decal interface optional


We are so confident of the reliability of our equipment, we offer the industry’s longest warranty period, 36 months repair or replacement policy.

For more information please call or use the IndustrySearch email for a direct reply.

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