The QPAC modular controller from Watlow is a modular silicon controlled rectiﬁer (SCR) power controller with plug-in features for ﬂexibility. Bases are rated from 150 to 1000 amperes in one-phase, three-phase, two leg and three-phase, three leg configurations.
A variety of transformers from 120 to 575VAC, along with 50/60Hz operation, enable the QPAC modular controller to operate in applications anywhere. Plug-in control cards set the QPAC's SCR ﬁring modes: solid state contactor, burst ﬁring (zero cross) or phase-angle models and are available with a wide variety of options. High speed fuses are included to protect the SCR modular controller from short circuit currents. 200KA short circuit current rating (SCCR) prevents arc ﬂash.
|Output Firing:||Zero Cross, Phase Angle|
|Phase Configurations:||1 or 3|
|Ambient Operating Range:||0 to 50°C (32 to 122°F)|
|Agency Approvals:||UL®, C-UL®, SCCR|
|Dimensions:||13 in. (330 mm) H x 6.9 in. (175 mm) W x 10.25 in. (260 mm) D|
|200KA short circuit current rating (SCCR)||
|Modular power controller||
|Available in 150 to 1000 ampere ratings||
|Available in solid state contactor, burst firing (zero cross) or phase-angle fired mode||
|Rugged design for 122°F (50°C) ambient operation||
|Semiconductor fuses and snubber protection included||
|Open heater or shorted SCR detector option||
|UL® 508 listed and C-UL® up to 1000 amperes||