BMT-55 4-Hour Mechanical Timer in Weatherproof Enclosure
Enclosure Size: 140 × 114 × 85 mm
The BMT-55 4-hour mechanical timer is a reliable and robust industrial timer supplied in a weatherproof enclosure for pump, irrigation and general control applications.
It is suitable for applications requiring a simple manual run, override or timed control function without the need for electronic programming.
Common applications include:
- Irrigation pump control
- Bore pump systems
- Pump manual run / override control
- Industrial machinery
- Fans and heaters
- Battery chargers
- General electrical control systems
Key Features
- 4-hour mechanical timing range
- Timing tolerance: ±10%
- Robust mechanical operation
- Supplied in a weatherproof enclosure
- Suitable for industrial and irrigation applications
- 250 VAC rated
- 16 (4) A rated current
- 10,000 electrical operations
Technical Specifications
| Timing Range | 4 hours |
| Timing Tolerance | ±10% |
| Voltage Rating | 250 VAC |
| Rated Current | 16 (4) A |
| Electrical Life | 10,000 operations |
| Switch Configuration | DPST, 1NO + 1NC |
| Wind-Up Angle | 288° |
| Terminal Size | 6.3 × 0.8 mm silver-plated tab terminals |
| Switch Position at Rest | NO / NC |
| Ambient Temperature | -10°C to +125°C |
| Dielectric Strength | 3750 VAC |
| Timer Dimensions | 76 × 76 × 55 mm |
| Enclosure Dimensions | 140 × 114 × 85 mm |
| Timer Weight | 114 g |
| Standard | EN 60730-2-1 |
Approvals: BEAB, CSA, SEMKO, IMQ, KEMA, UL, UTE and VDE.













