DPC-4F Controller
DPC-4F Duplex/Backup Controller
The DPC-4F Duplex/Backup Controller is a multi-functional pump controller designed to operate two pumps. The controller can be configured to operate as duplex backup controller or as a duplex controller. The controller operated using inputs from 1-4 float switches.

Features
- Selectable 4 operating modes:
- MODE 1: 1 float backup operation with adjustable pump run timer
- MODE 2: 2 float backup operation with adjustable lag pump timer
- MODE 3: 3 or 4 float backup operation with adjustable lag pump timer
- MODE 4: 3 or 4 float backup operation with adjustable lag pump timer
- LED status indicators
- Green power
- Green pump call-to-run (2)
- Amber float status (4)
- Red Alarm/backup
- Pump alternation selector switch (Alt, 1-2, 2-1)
- Adjustable pump run/lag timer
- Mode 1: pump timer 0-600 seconds
- Modes 2, 3, &4: pump lag timer 0-60 seconds
- Float out-of-sequence indication (mode 4 only)
- Mode confirmation indication; power up or mode selection change
- 120 VAC- 240 VAC powered
- 12 VDC low voltage float circuits
- (5) Relay outputs 5 amps @ 240VAC
- Pump called-to-run (2)
- Low & High level alarm
- Backup/horn alarm
- Backup/alarm reset input
- Back plate mounted
- Compact size: 5.81 x 3.5 x 1.98 inches (14.8 x 8.9 x 5.1 cm)
- UL Listed (E328331)
- 2-Year limited warranty
Specifications
Electrical Ratings:
- Input voltage: 100 ~ 250 VAC (50/60 Hz)
- Transient Protection: 10,000 V for 20 microseconds
- Float switch inputs: 12 VDC, 26 mA each
- Max float switch cable length: 328 feet (100 m)
Relay Outputs:
- Rating: 5 A max. @ 240 VAC
- Mechanical: 10,000,000 operations
- Full load: 100,000 operations
Environmental Rating:
- Internal panel mount only
- Operating temperature: -18°F ~ 140°F (-28°C ~ 60°C)
- Storage temperature: -40°F ~ 185°F (-40°C ~ 85°C)
- Relative humidity: 95% non-condensing
Conductor Size and Terminal Torque Requirements:
- Float terminals: 22-14 AWG, 7 in-lbs
- Top green terminals (pluggable): 22-14 AWG, 7in-lbs
Dimensions:
- Enclosure: 5.81 x 3.5 x 1.98 inches (14.8 x 8.9 x 5.1 cm)
- Mounting holes: 5.43 x 2.50 inches (13.8 x 6.4 cm)
- Recommended mounting screws: Size 8
- Weight: 7.5 oz (213 g)