BMT-55 6-Hour Mechanical Timer
6-hour manual run and override timer for irrigation pumps, bore pumps, and control panels.
The BMT-55 6-Hour Mechanical Timer is a reliable wind-up timer designed for manual override, extended run control, and pump testing in irrigation, pumping, agricultural, and industrial control systems.
This mechanical timer allows operators to run a pump control circuit, bore pump system, water transfer system, or other connected equipment for a preset period of up to 6 hours (360 minutes). Once the selected time has elapsed, the timer automatically changes its switch contacts, allowing connected equipment to shut down when correctly wired.
Because the BMT-55 is fully mechanical, it requires no external power supply, no programming, and no electronic controller for timing operation. Simply turn the dial to the required run time and the timer will count down automatically.
This model features vertically mounted wiring terminals, making terminal orientation an important consideration when installing or replacing a timer in an existing control panel.
Typical irrigation use:
Used as a manual override timer for irrigation pumps, bore pumps, and water transfer systems, allowing temporary operation for up to 6 hours before automatic shutdown.
Key Features
- 0–6 hour mechanical timer for extended manual run control
- No external power required for timer operation
- Ideal as an irrigation pump override timer
- Simple wind-up dial operation
- Automatic switching at the end of the selected time
- Vertically mounted wiring terminals (upright terminal configuration)
- DPDT switch configuration for flexible control panel wiring
- Compact mechanical design for control panel installation
- Suitable for agricultural, irrigation, and industrial applications
- Reliable mechanical timing with ±5% tolerance
Typical Applications
- Irrigation pump manual run timer
- Bore pump override and testing timer
- Pump control panel override timer
- Water transfer system timer
- Tank filling and water management systems
- Maintenance run timer for pumps and motors
- Industrial equipment run timer
- Ventilation and machinery control applications
Technical Specifications
| Feature | Specification |
|---|---|
| Timer type | Mechanical wind-up timer |
| Timing range | 0–6 hours (360 minutes) |
| Voltage rating | 250 VAC |
| Rated current | 16 A resistive / 4 A inductive |
| Switch configuration | DPDT |
| Electrical life | 10,000 operations |
| Timing tolerance | ±5% |
| Operating angle | 330° |
| Terminal type | 6.3 × 0.8 mm tab terminals |
| Terminal orientation | Vertical (upright mounting) |
| Maximum specified temperature | 125°C |
| Timer body dimensions | Approx. 47 × 47 × 30 mm (excluding spindle and dial) |
| External power supply | Not required for timing operation |
Why Choose the BMT-55 6-Hour Mechanical Timer?
The BMT-55 6-hour mechanical timer is a practical choice for irrigation and pump control panels where a longer manual run period is required. Its mechanical wind-up design makes it simple to use in the field, without batteries, electronic programming, or an external timing power supply.
The 6-hour timing range is particularly useful for irrigation pumps, bore pumps, and water transfer systems requiring extended temporary operation.
With its DPDT switch configuration and vertically mounted wiring terminals, the BMT-55 provides a straightforward mechanical timing solution for suitably configured industrial and agricultural control circuits.
Frequently Asked Questions
What is the BMT-55 6-hour mechanical timer used for?
It is commonly used as a manual override timer for irrigation pumps, bore pumps, water transfer systems, control panels, and general equipment run control.
Does this 6-hour timer require power?
No. The timer mechanism is fully mechanical and does not require an external power supply for timing operation. Connected equipment still requires its normal operating power.
Can it automatically switch off a pump?
Yes. When correctly integrated into a suitable control circuit, the timer can automatically shut down a pump after the selected operating time has elapsed.
How are the wiring terminals positioned?
This model features vertically mounted (upright) wiring terminals. The terminal orientation should be checked against the existing timer and available panel space before installation or replacement.
Can it be used for pump testing?
Yes. The timer is suitable for temporary pump operation, maintenance runs, and system testing where automatic shut-off is required after a preset time.
Can it directly control a pump motor?
The timer has a rated switching capacity of 16 A resistive or 4 A inductive at 250 VAC. For larger pump motors, use a suitably rated contactor or motor starter as required by the control system.
