H 57 type hour meter has 7 or 8 digit hour meter, high shock resistance, no reset, small size, magnified figures, IP 52 protection and other features. It is suitable for general counting, maintenance interval for measuring systems (ventilators, oxygen machines, dialysis machines), small appliances, UV lamps, display panels in cars.
The H57 series time meter from Kubler provides reliable hour counting for a variety of applications such as service intervals, medical devices, small appliances, and display panels. It features a 7‑ or 8‑digit display, high shock resistance, and data retention during power loss.
Technical data include multiple AC and DC voltage ranges, low power consumption, IP52 protection, and optional mounting configurations with slip‑on bezels. The unit is lightweight (48 g for H57, 84 g for AH57) and offers UL approvals for the US and Canada.
| Voltage (DC) range | 10–30 V DC |
|---|---|
| Voltage (AC) range | 20–30 V AC, 42–48 V AC, 100–130 V AC, 187–264 V AC, 360–440 V AC |
| Power consumption (10–30 V DC) | ≈500 mW |
| Power consumption (20–30 V AC, 50 Hz) | ≈0.3 VA |
| Protection rating | IP 52 |
| Weight (H57) | 48 g |
| Display digits | 7‑ or 8‑digit hour meter |
| Accuracy (DC) | < 0.003 % (24 h) |
The H57 can operate on 10–30 V DC, 20–30 V AC, 42–48 V AC, 100–130 V AC, 187–264 V AC, and 360–440 V AC (both 50 Hz and 60 Hz).
The device has an IP 52 protection rating.
The H57 weighs 48 g, while the AH57 variant weighs 84 g.
Optional mounting positions include a base‑mount socket, slip‑on bezels (55 mm or 72 mm), and a flat‑pin housing; sealing versions are available up to IP 65.