Electronics
     4QD Speed Controllers

4QD Uni 4 - 12V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$110.25

4QD Uni 4 -24V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$110.25

4QD Uni 4 - 36V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$121.25

4QD Uni 4 - 48V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$132.50

4QD Uni 8 - 12V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$127.00

4QD Uni 8 - 24V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$127.00

4QD Uni 8 - 36V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$137.75

4QD-Uni 8 - 48V Speed Controller
Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

$172.00

4QD-VTX-40 12V Speed Controller
Full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller.

$132.50

4QD-VTX-40 24v Speed Controller
Full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller.

$132.50

4QD-VTX-40 36V Speed Controller
Full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller.

$132.50

4QD-VTX-75 12V Speed Controller
Full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller.

$192.75

4QD-VTX-75 24V Speed Controller
Full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller.

$193.00

4QD-VTX-75 36V Speed Controller
Full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller.

$198.25

4QD PRO-120 24V Speed Controller
Pro 120 Mark 2 is built on the success of the Pro controller. The circuits of these are so well proven and successful that no major design was possible, but the board has been re-laid using sub-miniature resistors to give room for more features.

$286.25

4QD PRO-120 36V Speed Controller
Pro 120 Mark 2 is built on the success of the Pro controller. The circuits of these are so well proven and successful that no major design was possible, but the board has been re-laid using sub-miniature resistors to give room for more features.

$297.50

4QD-150 24V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$419.25

4QD-150 36V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$419.25

4QD-150 48V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$441.00

4QD-200 24V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$441.00

4QD-200 36V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$441.00

4QD-200 48V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$462.50

4QD-300 24V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$539.75

4QD-300 36V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$539.75

4QD-300 48V Speed Controller
Designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range.

$573.25