Twin Pump Control Panel | Electromechanical Duty/Assist, 4 Floats, 230V
Built for the job
Electromechanical twin pump control panel for dirty water and sewage sumps
Runs two 230V single phase pumps from four float switches, alternates the duty pump, brings in the second pump to assist and sounds an alarm at high level.
An automatic control box for two 230V single phase dirty water or sewage pumps up to a nominal 13A each, with protection against dry running and motor overload. It uses contactors with manually set motor overloads and a 24V AC float circuit, and comes in a steel or plastic IP55 enclosure.
Part of our pump accessories and float switches range.
How the four floats work
From the bottom up: stop, duty start, assist and high level alarm.
As the level rises, the duty float starts the pumps on an alternating basis. When the level drops, the bottom float stops the pump. If the level reaches the assist float, the second pump also starts. If it reaches the top float, the audible alarm sounds and the alarm light on the panel comes on.
Alternating duty/standby can also be set up with three floats, wired to terminals 1-2 (stop), 3-4 (alternating duty) and 7-8 (high level alarm). As a guide, pump cycles should not exceed 10 per hour.
At a glance
- Two pumps, four floats: alternating duty/assist, or duty/standby with three floats.
- For 230V single phase pumps up to a nominal 13A each.
- Two contactors with motor overloads, set manually to the pump running current (ranges 2.5–4, 4–6, 5.5–8, 7–10 and 9–13A).
- 24V AC float circuit from a 50VA transformer.
- HRC fuses on the mains and auxiliary circuits.
- Lockable door-interlocked isolator that cuts the supply when the door is open.
- Hand / off / auto switch for each pump, run and thermal cut-out lights, and an illuminated audible alarm buzzer with on/off switch.
- Additional 24V alarm output.
Which version do I need?
| Product code | Enclosure | Start capacitors | Size H x W x D | Weight |
|---|---|---|---|---|
| P2BPA2L | Sheet steel, IP55, key lock, 4 wall brackets | Facility for capacitors where not built into the pump | 400 x 300 x 180mm | 12.0 kg |
| P2BPA2NCP | Plastic, IP55, four recessed locking screws | Not fitted: for pumps with internal capacitors | 420 x 310 x 150mm | approx. 8.0 kg |
If your pumps need a separate start capacitor, choose the steel P2BPA2L.
Images are representative and may not show the exact model selected.
What's included
1 x twin pump control panel, in the version selected. Pumps, float switches and cable are not included.
Installation
We supply the panel only. It must be selected, installed, tested and certified by a qualified electrician to BS 7671, who should confirm that the pump's running current sits within the panel's range, and that the supply, protection and float arrangement suit the site.
Downloads
Twin pump control panel data sheets, P2BPA2L and P2BPA2NCP (PDF)
