Multi 1 Single Pump Control Panel | Float, Probe or Pressure Switch
Built for the job
Multi 1 single pump control panel for sumps, tanks and drainage chambers
Starts and stops one submersible pump from float switches, level probes or a pressure switch, with full motor protection and outputs for a high level alarm.
The Multi 1 is an electronic control panel for a single pump. It has an adjustable overload, motor thermal (klixon) protection, voltage protection and manual / off / auto control, with 12V outputs for a siren and flashing beacon and a volt-free alarm contact. It is available for 110V and 230V single phase and 400V three phase pumps up to 11kW, in thermoplastic or steel enclosures.
Part of our pump accessories and float switches range.
How the floats work
In sewage mode the Multi 1 uses three floats, each on its own terminals.
From the bottom up: the stop float (terminals 1-2), the pump start float (3-4) and the high level alarm float (7-8).
The pump starts when the start float lifts and runs until the level drops below the stop float. If the level reaches the alarm float, the alarm outputs switch on and the pump keeps running. Clean water emptying and filling modes are also available, including single-float and level probe set-ups.
At a glance
- One pump, four level inputs: min, max 1, max 2 or pressure switch, and high level alarm.
- Float switches, level probes or pressure switch: probe sensitivity adjustable from 10 to 100 kΩ.
- Timed probe option: two-probe operation with a run timer adjustable from 1 to 240 minutes.
- Adjustable overload: 2–18A (110V and 230V), 0.5–16A or 4–25A (400V).
- Motor protection: maximum current, klixon thermal overload, minimum and maximum voltage, and phase loss and sequence on three phase models.
- Alarm outputs: 2 x 12V DC (max 200mA) for a siren and flashing LED lamp, plus a volt-free contact (max 5A, NC-COM-NO).
- IP55 enclosures with side-hinged doors and external fixing lugs, so there is no need to drill the enclosure.
Which version do I need?
Choose the supply that matches your pump, then the enclosure. The pump's running current must fall within the overload range of the version you choose.
| Model | Supply | Motor power | Motor current | Enclosure | Size W x L x H | Weight |
|---|---|---|---|---|---|---|
| Multi 1-P-110 | 110V single phase | 0.37–1.1kW | 2–18A | Thermoplastic | 245 x 285 x 140mm | 2.2 kg |
| Multi 1-M3-110 | 110V single phase | 0.37–1.1kW | 2–18A | Steel, 300 x 300mm | 300 x 300 x 150mm | 7.3 kg |
| Multi 1-M4-110 | 110V single phase | 0.37–1.1kW | 2–18A | Steel, 300 x 400mm | 300 x 400 x 150mm | 8.8 kg |
| Multi 1-P-230 | 230V single phase | 0.37–2.2kW | 2–18A | Thermoplastic | 245 x 285 x 140mm | 2.2 kg |
| Multi 1-M4-230 | 230V single phase | 0.37–2.2kW | 2–18A | Steel, 300 x 400mm | 300 x 400 x 150mm | 8.8 kg |
| Multi 1-P-400-10 | 400V three phase | 0.37–7.5kW | 0.5–16A | Thermoplastic | 245 x 285 x 140mm | 2.6 kg |
| Multi 1-M4-400-10 | 400V three phase | 0.37–7.5kW | 0.5–16A | Steel, 300 x 400mm | 300 x 400 x 150mm | 9.2 kg |
| Multi 1-P-400-15 | 400V three phase | 2.2–11kW | 4–25A | Thermoplastic | 285 x 345 x 165mm | 3.3 kg |
Thermoplastic enclosures close with two side screws. Steel enclosures have a key lock.
110V panels must not be used with centre tap earth (CTE) transformers, as this will damage the circuit board.
Adding an alarm
The Multi 1 does not have a siren or beacon built in. To add one, fit a separate 12V alarm unit, such as our Basic Alarm in 12V DC, which connects to the alarm terminals on the panel's circuit board. If you use a 12V alarm with a flashing beacon, connect it to the panel's 12V flashing lamp output. The volt-free contact can also be used for a remote alarm or dialler.
Setting up
- Operating mode: sewage, clean water emptying or clean water filling, set by DIP switch.
- Voltage protection: on or off by DIP switch.
- Overload: turn the trimmer to full scale, run the pump, turn it down until the protection light comes on, then increase the setting by 20%.
- Resetting: alarms reset automatically, except motor overcurrent, which resets by holding the button for 2 seconds.
Images are representative and may not show the exact model selected.
What's included
1 x Multi 1 single pump control panel, in the version selected. Pumps, float switches, alarm units 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 nameplate power and running current sit within the range of the version you choose, and that the supply, protection and float arrangement suit the site.
