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Tough Duty Power/Vac Replacement

ToughDuty Circuit Breaker PowerVac ReplacementCBS MaxiVac's™ new Tough Duty line of roll-in replacement circuit breakers replaces aging Power/Vac® breakers without any modifications to existing cells or switchgear. The Tough Duty™ breakers are tested per ANSI/IEEE certification standards, are available in all standard ratings, and include the newest replacement encapsulated pole assemblies from Vacuum Interrupters, Inc. Encapsulated poles harden your breakers against environmental contamination, extending the life of your power distribution equipment.


Tough Duty™ Circuit Breaker Advantages

  • Direct Roll-In Replacement
  • Meets or Exceeds ANSI/IEEE Testing Standards
  • 5-year, 3,000-Operation Warranty
  • New Rugged Encapsulated Vacuum Interrupter Pole Design
  • Mechanism Made In USA
  • Extended Warranties Available
  • Utilizes Trusted ML-17 and ML-18 Mechanisms
Tough Duty Embedded Pole

Tough Duty™ Circuit Breaker Benefits

Direct Roll-In Replacement. Roll-in replacement requires no cell or wiring modifications, avoiding switchgear replacement and downtime costs.

ANSI/IEEE C37 Tested. The circuit breaker has been tested to the latest applicable ANSI/IEEE C37 standards, including C37.09.

Mechanism Made In USA. Trusted ML-17 and ML-18 mechanisms have been remanufactured to ISO standards, including OEM recommendations and service advisories.

Safety First. Maintains existing maintenance and safety procedures; works with existing remote racking and switching equipment.

Repetitive Duty Upgrade. Need more than 3,000 operations? Ask about our Repetitive Duty Upgrade warranty.

Upgraded Pole Assemblies. New encapsulated pole assemblies are rugged, can extend existing interrupt capabilities, and have a longer service life than legacy pole designs.


Tough Duty™ Models & Ratings

Click to Download PDF with all Model & Rating Information

Click to Download PDF Order Form

Model Identification & Replacement Part Number

Replacement
Tough Duty
Part Number
Original Model
Number
Normal rms
Voltage Class (kV)
Normal 3-phase
Class (MVA)
VBTD-5-250-12 VB-4.16-250 4.16 250
VBTD-5-250-20
VBTD-5-350-12 VB-4.16-350 350
VBTD-5-350-20
VBTD-8-500-12 VB-7.2-500 7.2 500
VBTD-8-500-20
VBTD-15-500-12 VB-13.8-500 13.8 500
VBTD-15-500-20
VBTD-15-750-12 VB-13.8-750 750
VBTD-15-750-20

 

Replacement Part Rated Values

  Identification Rated Values
Replacement 
Tough Duty Part Number
Voltage Insulation Levels Current
Rated Maximum Voltage (kV) Rated Voltage Range Factor (K) Rated Withstand Test Voltage Continuous
rms Current
Ratings
(A)
Short
Circuit rms
Current
Rating (at
Rated
Max kV)
(kA)
Low
Frequency
rms
Voltage
(kV)
Crest
Impulse
Voltage
(kV)
VBTD-5-250-12 4.76 1.24 19 60 1200 29
VBTD-5-250-20 2000
VBTD-5-350-12 1.19 1200 41
VBTD-5-350-20 2000
VBTD-8-500-12 8.25 1.25 36 95  1200 33
VBTD-8-500-20 2000
VBTD-15-500-12 15 1.3 1200 18
VBTD-15-500-20 2000
VBTD-15-750-12 1200 28
VBTD-15-750-20 2000

 

Replacement Part Related Required Capabilities

Identification  Related Required Capabilities
Replacement Tough Duty Part Number Maximum Symmetrical Interrupting
& 3-sec Short Time 
Capability Rating (kA)
Closing and Latching Capability 
rms Current (kA)
VBTD-5-250-12 36 58
VBTD-5-250-20
VBTD-5-350-12 49 78
VBTD-5-350-20
VBTD-8-500-12 41 66
VBTD-8-500-20
VBTD-15-500-12 23 37
VBTD-15-500-20
VBTD-15-750-12 36 58
VBTD-15-750-20

 

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