B-2 recloser/regulator bypass medium-voltage disconnect switches and assemblies

Siemens B-2 regulator bypass medium-voltage disconnect switch

15-38 kV
  • Rated continuous current up to 900 A

  • Lightning impulse (BIL) up to 200 kV

B-2 medium-voltage recloser/regulator bypass disconnect switches

A versatile bypass solution, the type B-2 bypass switch is purposely designed as a recloser bypass and can also be used as a regulator bypass. Underhung and angled pole-mounting brackets contribute to ease of installation.


Watch the video below to learn more about Siemens medium-voltage air-break disconnect switches. 


Recloser or regulator bypassing to reduce the impact of equipment maintenance on network reliability.


Features include:

  • Robust square-tubular copper blades.


  • Porcelain or polymer insulators
  • Stop-position angle
  • Left- or right-hand bypass operation
  • Custom terminal arrangements
  • Loadbreak hooks.


  • Voltage ratings of 15, 27, and 38 kV
  • Rated continuous currents of 600 and 900 A
  • Lightning impulses (BIL) of 110, 150, and 200 kV.

Bypass recloser assembly type B-2

Siemens type B-2 bypass assembly offers quick and simple installation. Originating from the reliable B-2 single-phase switch, all three-phase units ship preassembled on the crossarm for easy installation at the site, which reduces time and overall installation costs. A B-2 bypass assembly is customizable with porcelain or polymer insulators and galavanized or fiberglass bases. The assembly provides a means for bypassing and disconnecting pole-mounted reclosers. Proper sequence operation allows the recloser to be bypassed and isolated from the system.


  • Reduce downtime when maintenance is required
  • Minimize installation time through pre-assembly.

Features and benefits:

  • 15.0 kV, 25.0 kV and 38.0 kV voltage ratings
  • Factory installed on galvanized or fiberglass arm
  • Adjustable pole gain provides angling option per field conditions
  • Single- or double-point lift bracket
  • Arm length 8’ (2.4 m), 10’ (3.0 m), or 12’ (3.7 m) (custom phase-spacing available)
  • Customer terminal pad options to simplify terminal connections
  • Easy identification of bypass blades in open or closed position
  • Three-pull design
  • Square copper-tube blades
  • High-pressure coin silver contacts
  • Load-break hooks available
  • Left- or right-hand bypass blade
  • Custom configurations available
  • Coastal environment options
  • Quick installation
  • Factory adjusted.
Maximum nominal voltage kV
Basic insulation level kV
Continuous current

Mailing address

Siemens Industry, Inc.

99 Bolton Sullivan Drive

Heber Springs, Arkansas 72543

United States

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