BMT-55 in Weatherproof Enclosure
Dependable, Easy-Install Replacement for ISGUS ISG12 (MO12)
Enclosure Size: 140 × 114 × 85 mm
Upgrade your control system with the BMT-55 Mechanical Timer, the robust and easy solution designed to
replace the ISGUS ISG12. No batteries, no complex programming—simply wind it up and set your schedule.
With a 12-hour timing range and reliable mechanical design, the BMT-55 is the perfect choice for
homes, workshops, and demanding industrial environments.
Key Benefits
- Direct ISGUS ISG12 Replacement – Uses the same mounting locations for a hassle-free swap.
- Weatherproof Protection – Rugged enclosure shields against outdoor conditions.
- Reliable & Low-Maintenance – Purely mechanical, no batteries or electronics required.
- Precise 12-Hour Timing – Accuracy within ±10% for dependable scheduling.
- Easy Installation – Compatible mounting makes setup quick and simple.
- Flexible Control – Hold position terminal for customised configurations.
Ideal Applications
✔ Lighting control
✔ Irrigation systems
✔ Ventilation systems
✔ Heating systems
✔ Industrial applications
✔ Outdoor fire pits
Technical Specifications
| Voltage Rating | 250 VAC |
| Rated Amperage | 16 A (resistive) / 4 A (motor) |
| Switch Configuration | DPST (1NO + 1NC) – 12-hour models |
| Timing Range | 12 hours ±10% |
| Number of Electrical Operations | 10,000 |
| Ambient Temperature | –10 °C to +125 °C |
| Dimensions (Timer Only) | 76 × 76 × 55 mm |
| Enclosure Size | 140 × 114 × 85 mm |
| Weight | 100 g |
| Approvals | BEAB, CSA, SEMKO, IMQ, KEMA, UL, UTE, VDE |












