Hubbell Industrial Controls, Inc. 

4301 Cheyenne Drive, Archdale, NC  27263 

Phone (336) 434-2800  •  Fax (336) 434-2803 

HMTS - Manual Transfer Switch


Hubbell manual transfer switches are designed to provide dependable transfer of power from one source to another while preventing potentially dangerous feedback from the generator to the utility system.

These switches are available in 2, 3, or 4 pole configurations from 40-4000 Amps.  Single handle transfer mechanisms are used through 1200 Amps.  Double handles may be used for 1600 Amps and above.

HMTS type switches include UL listed components and are built to meet or exceed UL98 and UL508 standards.  These devices are typically installed with a generator in a standby power system.  The purpose of which is to provide an alternate source of power for residential or commercial applications where the loss of power could cause discomfort, interruption of business, or damage to products or contents.


  • Single Handle Operator (up through 1200 Amps)
  • Type 1 enclosed
  • Non-fused
  • Key lockable
  • Quick Break-Quick make Contacts
  • UL Listed components
  • DPDT Auxiliary Contacts
  • 2, 3, & 4 poles available
  • Sizes from 40A-4000A
  • Interlock allows door opening only when switch is in off position
  • Terminals accept copper or aluminum cable

Drawings and Publications

Selection Table - 2P
Selection Table - 3P
Selection Table - 4P

Schematic –
Non Service Rated

Field Connections –
Non Service Rated
x Schematic –
Service Rated
x Field Connections –
Service Rated

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Hubbell Incorporated 2017
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