SV SERIES

Available Catalog Numbers:

Single Phase:

  • SV110DT-(*)        100 Amp Main        100 Amp Auxiliary
  • SV210DT-(*)       200 Amp Main        200 Amp Auxiliary
  • SV410DT-(*)        400 Amp Main        400 Amp Auxiliary
  • SV610DT-(*)        600 Amp Main        600 Amp Auxiliary

Three Phase:

  • SV113DT-(*)        100 Amp Main        100 Amp Auxiliary
  • SV213DT-(*)       200 Amp Main        200 Amp Auxiliary
  • SV413DT-(*)        400 Amp Main        400 Amp Auxiliary
  • SV613DT-(*)        600 Amp Main        600 Amp Auxiliary

(*) Select desired bolt-on hub or top configuration from the HUB SELECTION CHART and add the appropriate suffix to the catalog number:

Hub Selection Chart

                                                              Single Phase:

Solid
Top
(SM) Hub
Opening
Cover
Plate (SM)
1 1/4" (SM)1 1/2" (SM)2" (SM)2 1/2" (SM)
ABCLMNP

                                                                               Three Phase:

Solid
Top
(LG) Hub
Opening
Cover
Plate (SM)
2 1/2" (LG)3" (LG)3 1/2" (LG)4" (LG)
ATUVQRS

Unit Information:

CATALOG
NUMBER
HUB
OPENING
WIRE SIZEDIMENSIONSSHIPPING
WEIGHT
LINELOADAUXHWD
SV110DT-(*)SMALL1/0(4) 1/01/024"14"8 1/4"45 Pounds
SV210DT-(*)SMALL250(4) 25025036"18"8 1/2"60 Pounds
SV410DT-(*)LARGE(2) 350(4) 350(2) 35044"20"11 1/4"110 Pounds
SV610DT-(*)LARGE(2) 500(1) 500
(3) 350
(2) 50056 1/2"23"15 1/4"170 Pounds
SV113DT-(*)SMALL1/0(4) 1/01/025"23"8 1/2"75 Pounds
SV213DT-(*)LARGE250(4) 2501/036 3/4"23"8 1/2"85 Pounds
SV413DT-(*)LARGE(2) 350(4) 350(2) 35048"28"11 3/4"125 Pounds
SV613DT-(*)LARGE(2) 500(1) 500
(3) 350
(2) 50055 1/2"33 1/2"15 1/4"240 Pounds

(*) Select desired bolt-on hub or top configuration from the HUB SELECTION CHART and add the appropriate suffix to the catalog number:

600 Amp units do not have provisions for a twist lock receptacle.

SINGLE PHASE

Switches are double pole/double throw with a center off position.

For male 50 ampere twist lock receptacle installed and prewired to auxiliary connectors, add suffix R to catalog number (example: SV110DTR-B).   Single phase units with receptacles are limited to 12 KW (50 ampere) auxiliary input.

For field installable 50 ampere twist lock receptacle order catalog number ARP00176

THREE PHASE

Switches are triple pole/double throw with a center off position.

Contact the factory for any information on factory installed twist lock receptacles for three phase units.

 

GENERATOR BREAKER TRANSFER SWITCHES

Ideal for residential or farm applications where a safe, convenient transfer to generator power is desired.

Features:

  • Safe...Prevents generator feedback onto Utility lines

  • Convenient...Simply slide the interlock and turn the circuit breaker "ON"

  • 100 and 200 Amp main breaker ratings with 50, 100, and 200 AMP auxiliary breaker ratings

  • Available with or without meter socket

  • Outdoor type 3R enclosure

  • UL Listed as Service Equipment

  • Suitable for use on optional standby systems

  • 10,000 AMP short circuit current

The Durham Company is pleased to announce availability of its UL Listed Generator Transfer Switches.  The heart of this product is the circuit breaker interlocking system.  A pair of circuit breakers are mounted side-by-side, with a sliding interlock positioned to move between them.  This sliding interlock allows only one circuit breaker at a time to be in the "ON" position.  With this arrangement, it is impossible to feed generator power back to the utility lines.

Several models are available, with and without meter sockets.  Models without meter sockets are ideal for upgrading existing services.  Models with meter sockets are excellent for new services.

SB SERIES

Generator Transfer Switch with Meter Socket

Available Catalog Numbers:

  • SB114DT50*        100 Amp Main        50 Amp Auxiliary
  • SB114DT100*       100 Amp Main        100 Amp Auxiliary
  • SB204DT50*        200 Amp Main        50 Amp Auxiliary
  • SB204DT100*        200 Amp Main        100 Amp Auxiliary
  • SB205DT200*        200 Amp Main        200 Amp Auxiliary

 

* Select Hub needed from selection chart and add suffix to catalog number

* Add "U" Prefix for UL label.


Hub Selection Chart:

Solid
Top
(SM) Hub
Opening
Cover
Plate (SM)
1 1/4" (SM)1 1/2" (SM)2" (SM)2 1/2" (SM)
ABCLMNP

Unit Information:

100 Amp MainWire Range:Line Side:#8 -2/0 CU-AL
Auxiliary:#14-1/0 CU
Load Side(1) #6-250 kcmil CU-AL & 
(3) #14-1/0 CU-AL
Size:30 3/8" H x 12" W x 4 3/8" D
Weight:40 Pounds
200 Amp MainWire Range:Line Side:#6-250 kcmil CU-AL
Auxiliary#14-1/0 CU
Load Side:(3) #6-250 kcmil CU-AL
Size:34 1/4" H x 13" W x 4 3/8" D
Weight:50 Pounds

For male 50 Amp locking-type receptacle installed and prewired to auxiliary connectors, add suffix "R" to catalog number.  Example Catalog (USB114DTR50B).

Units with receptacles limited to 50A (12KW) aux input.  Add 2 lbs to weight for receptacle.

UNITS HAVE MULTI-RING KNOCK OUTS WITH A MAXIMUM OF 2 1/2" ON BOTTOM, BACK, AND SIDE

B SERIES

Generator Transfer Switch Enclosure

Available Catalog Numbers:

  • B114DT50*        100 Amp Main        50 Amp Auxiliary
  • B114DT100*       100 Amp Main        100 Amp Auxiliary
  • B204DT50*        200 Amp Main        50 Amp Auxiliary
  • B204DT100*        200 Amp Main        100 Amp Auxiliary
  • B205DT200*        200 Amp Main        200 Amp Auxiliary

 

* Select Hub needed from selection chart and add suffix to catalog number

* Add "U" Prefix for UL label.



Hub Selection Chart:

Solid
Top
(SM) Hub
Opening
Cover
Plate (SM)
1 1/4" (SM)1 1/2" (SM)2" (SM)2 1/2" (SM)
ABCLMNP

Unit Information:

100 Amp MainWire Range:Line Side:#8 -2/0 CU-AL
Auxiliary:#14-1/0 CU
Load Side(1) #6-250 kcmil CU-AL & 
(3) #14-1/0 CU-AL
Size:23 3/8" H x 12" W x 4 3/8" D
Weight:30 Pounds
200 Amp MainWire Range:Line Side:#6-250 kcmil CU-AL
Auxiliary#14-1/0 CU
Load Side:(3) #6-250 kcmil CU-AL
Size:26 1/2" H x 13" W x 4 3/8" D
Weight:50 Pounds

For male 50 Amp locking-type receptacle installed and prewired to auxiliary connectors, add suffix "R" to catalog number.  Example Catalog (USB114DTR50B).

Units with receptacles limited to 50A (12KW) aux input.  Add 2 lbs to weight for receptacle.

UNITS HAVE MULTI-RING KNOCK OUTS WITH A MAXIMUM OF 2 1/2" ON BOTTOM, BACK, AND SIDE


400 AMP STANDBY GENERATOR TRANSFER SWITCH

 For Larger Homes & Commercial Applications - Catalog # 1010288

400 Amp Main Breaker

200 Amp Standby Generator Breaker

320 Amp Continuous-HQ Lever Bypass Block

                                                             

Single Phase 120/240 Volt

Dimensions 48"H 16"W 6 3/4" D

Line Connectors Dual #6-350 MCM

Load Connectors (3) #6-250 MCM