Sewage treatment plant control
Loss of rotation control panels for RBC plants
Industrial-grade replacement for the PCB panels on Klargester, Kee, Marsh, Harlequin and similar rotating treatment plants.
Replaces PCB panels
Industrial switchgear with a lifetime warranty on the stepping relay.
Built-in timer
Set the expected rotation period on the panel.
Alarm outputs
Volt-free for rotation failure and motor trip; 24V beacon supply.
SMS alerts optional
Know about a stopped drum before the drains back up.
A rotating biological contactor stops treating sewage the moment its drum stops turning, and nobody notices until the outfall smells. This panel watches the rotation, raises an alarm with a beacon and volt-free signal when it stops, and trips the motor on overload. It is built from industrial switchgear to replace the PCB panels that typically fail after a few years.
Fits most rotating plants
Compatible with Klargester, Kee, Marsh, Harlequin and other rotating sewage treatment plants, for both gravity and pumped systems. A reed switch on the drum feeds the panel; we can supply the reed switch if required.
Rotation only, or rotation plus pump
Order it as a detection-only panel, or with pump power included for plants that need a permanent supply, such as pumps with built-in float switches. Float switch inputs can be brought into the panel directly.
Built to be left alone
An adjustable timer is built in as standard, so different revolution speeds are set without extra parts. Beacon terminals come as standard and a beacon guard is available. Volt-free relays for motor trip and rotation failure connect straight to an alarm dialler or BMS.
Specification
| Application | Rotating biological contactor sewage treatment plants, gravity or pumped |
|---|---|
| Supply | 230V 1ph |
| Current rating | 1 to 18A (specify when ordering) |
| Starting | Direct-on-line |
| Detection | Reed switch input with adjustable timer |
| Alarms | Sounder, 24V beacon supply, volt-free rotation failure and motor trip |
| Control circuit | 24V AC |
| Enclosure | Powder-coated mild steel; GRP up to IP66 for outdoors |
| Dimensions | Enclosure 400 x 300 x 200mm, plus door items |
| Warranty | 12 months; lifetime on the stepping relay |
Every panel ships with its wiring diagram, a test certificate and a 12-month warranty.
Options
Options
- Pump power included
- Float switch inputs
- Reed switch supplied
- SMS alarm notifications
- Ammeter
- Hours run indicator
- Generator inlet
- Panel heater with thermostat
- 230V auxiliary socket
- Battery-operated power failure alarm
- Spring-back switches
- Beacon and beacon guard
Options are priced on your quote, itemised, so you can see what each one adds.
Price and lead time
Priced on application; a rotation-only panel is a small DOL panel and priced accordingly. Tell us the plant make and whether pump power is needed.
10 to 20 working days.
Frequently asked questions
Jobs we have done with this range
All case studies →
Pump service contractor, West Sussex
Three Telemetrix panels for West Sussex County Council's landfill pumping stations
The contractor look after the pumping infrastructure at West Sussex County Council's landfill sites under a long-term asset management contract. They fitted three wastewater high-level Telemetrix panels so the council gets live status and alerts, and maintenance can be preventative rather than reactive.
Read the case study
Pump specialist, Oxfordshire
A star/delta Telemetrix panel, turned round quickly for an Oxford campus
A pumping station on a university campus in Oxford needed its control panel replaced, along with the pump and the float switches. The pump specialist specified a bespoke star/delta Telemetrix panel with remote monitoring, and the whole job, panel, floats and a new 6kW Sulzer pump, was done in a morning.
Read the case study
Pumping station specialist, South East
Telemetrix as standard across a pump service contractor's stations
The contractor refurbishes and maintains pumping stations across the South East, and now fit Telemetrix as a matter of course: three side by side at one site, four in a single week at others, six and counting. They install them and then monitor them for their clients.
Read the case studyRelated panels

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Industrial switchgear plus cloud connectivity over 4G, WiFi or Ethernet. Email alerts free for life; texts 10p each.
£1,798 + VAT for the dual pump DOL panel (up to 18A) and £4,300 + VAT for star/delta (up to 41A).
View TelemetrixRequest a quote for Loss of rotation (RBC)
Tell us the pumps or points, the supply, the site and anything the panel must comply with. Attach a spec or drawing if you have one.
“The detail, and thought that goes into making these installer and end user friendly is second to none. The best control panels we've seen, let alone had the pleasure of using. Great products.”
- Wiring diagram, test certificate and 12-month warranty with every panel
- Built to BS EN 61439-2 and BS EN 60204-1 in Stoke-on-Trent
- We reply during working hours, usually the same working day
Got a project, or just need a quick answer?
Tell us what the panel has to do and we will come back with a price and a lead time. Existing accounts: reorders and spares go through the same form.
