Retrofitting VCB for discontinued VCB

Manufacturing of VCB type 10-VPR-25M & 10-VPR-25B(B) ceased in 1983, as well as the supply of replacement parts which also was ceased in 2000. Since those VCBs cannot be supplied anymore, We recommend to replace the aged VCBs with our compatible new VCBs (Retrofit VCB) in order to extend equipment life and ensure the safe and reliable operation of your switchgear.

Features of Retrofit VCB

High reliability

  • The highly reliable BH-2 operating mechanism is incorporated in the Retrofit VCB.
  • This operating mechanism is used in Mitsubishi’s latest VCBs.

Saving maintenance time

  • Short maintenance time: less moving parts yields a shorter working time.
  • 15 years maintenance-free BH-2 mechanism.

Simple & Safe Operation

  • The Retrofit VCB can be easily drawn-out or inserted by a single levering action.

Full compatibility

  • Wiring modification of control circuit is not required. Only an interlock plate must be installed to the floor of the VCB compartment.

Ratings

Retrofit VCB Type VV-10VPR-25M, VV-10VPR-25BB
Closing operation mechanism Motorized stored energy spring mechanism
Rated voltage (kV) 11(13.8)
Rated current (A) 630, 1250 1600, 2000
Rated frequency (Hz) 50/60
Rated short-circuit breaking current (kA) 20 / 25
Rated short-circuit making current (kA) 50 / 62.5
Rated short-time withstand current (kA) 20 / 25
Rated breaking time (cycles) 3
Power frequency withstand voltage (kV) 28(36)
Lightning impulse withstand voltage (kV) 75(95)
Rated operating sequence 0-1min.-C0-3min.-CO C0-15sec.-CO
Weight (kg) 130 140
Type of existing VCB 10-VPR-25M, 10-VPR-25B(B)
  • NOTE:Contact MITSUBISHI ELECTRIC through our distributor, if the application of ANSI standard is required.

Outline and Dimensions

It needs some modification for existing Switchgear to apply the Retrofit VCB.
If consider using this retrofit VCB, please contact us. In that case, please inform the serial number of the existing VCB and existing Switchgear.