Product Overview
The LR400-3Dxx Dual Pump Controller is a powerful, easy-to-install solution for domestic and industrial pumping stations, designed to replace the trusted LR40 series with enhanced performance and protection.
Available in 8A (LR400-3D08) and 16A (LR400-3D16) models, this twin pump controller delivers reliable automatic pump control using float switches, with built-in pump alternation to extend pump life and improve system efficiency.
Engineered for simplicity, the LR400-3Dxx features a rugged IP65 enclosure, tool-free wiring, and clear internal instructions—making installation fast and hassle-free. Integrated audio and visual alarms, plus optional beacon output, ensure clear fault indication at all times.
With advanced pump-current monitoring and overload protection, along with expandable upgrade options, including GSM telemetry and battery backup, the LR400-3Dxx is a flexible, future-ready pump control panel for modern applications.
Key Features
- Dual pump controller for twin pump systems
- Float switch control for accurate and reliable level management
- Automatic pump alternation to reduce wear and extend lifespan
- Pump current monitoring (up to 20A) with overload protection
- Built-in audio & visual alarm for fault indication
- 12V beacon output for remote or hidden installations
- IP65-rated pump control panel for indoor & outdoor use
- Lockable interlocked isolator for safe maintenance
- Tool-free fast connectors for quick installation
- Hinged lid for ease of installation and servicing
- Internal printed wiring instructions for easy setup
- Expandable with:
- Pump over-temperature protection
- Battery backup alarm system
- GSM telemetry for remote alerts
- Available in 8A and 16A pump controller variants
Specification
| | Rating |
Enclosure
IP Rating
Material
Dimensions
Weight |
IP65
Polycarbonate
W380mm x h280mm x d170mm
3kg |
| Supply Voltage | I 240V Single-phase
III 400V three-phase |
| Pump Output Current | 3D08 8A max each pump
3D12 12A max each pump
3D16 16A max each pump |
| Pump Protection | ▪ Overcurrent trip
▪ Alternating pumps
▪ Contactor fault detection
▪ Over-temperature trip [optional extra] |
| Over-Current Setting Range | 1-20A each pump |
Float Switch Input
Switched voltage
Maximum switched current
Maximum cable length | [Works with any switched input]
3.3Vdc
10mA
200m |
Audio Output
Maximum sound level | 105dB 3Khz 12Vdc |
| Visual Alarm Output | Red flashing LED |
Alarm Output Relay
Relay topology
Maximum current
Maximum Voltage |
COM/NO/NC SPDT
1A @ 250Vac
250Vac |
Beacon Alarm Output
Voltage
Maximum current |
12Vdc
250mA |
| Ambient Temperature | -10°C to +55°C |
| Conformance | EN 61010-1
EN 61000-6-1
EN 61000-6-2
EN 61000-6-3
EN 61000-6-4 |
Downloads
Download LR400-3Dxx Manual
