This is a 8345-type protection switch from e-t-a. The switch has magnetic or hydraulic-magnetic release, with optional auxiliary contacts. The switch meets IEC 60934, UL 489 and UL 1077 standards. It has an excellent triggering mechanism, which can reliably cut off at the slightest overcurrent, and is low temperature sensitive under rated load.
This document provides technical specifications for the E-T-A 8345 series of single- to multi-pole hydraulic-magnetic circuit breakers. These devices feature a toggle switch actuation mechanism suitable for front mounting in various applications within communication and transportation sectors.
The datasheet details nominal current ranges from 0.05A to 125A, available trip curves (K1, M1, M2, T1, T2), and compliance with standards such as EN 60934, UL 489, and UL 1077. It includes comprehensive ordering keys for different mounting types, auxiliary contact configurations, and terminal styles. This manual is written in German.
| Nominal Current Range | 0.05...125 A |
|---|---|
| Operating Temperature | -40 °C...85 °C |
| Switching Life (DC 80V) | 10,000 operations |
| Insulation Coordination | 2.5 kW/2 |
| Weight per Pole | approx. 90 - 120 g |
The available trip curves are K1 (fast), M1 (medium slow DC), M2 (medium slow AC), T1 (slow DC), and T2 (slow AC).
The device operates within an ambient temperature range of -40 °C to 85 °C.
The maximum tightening torque is 0.33 Nm for Bauform B/C and 2 Nm for accessory modules.
The breaker is available in a nominal current range from 0.05 A to 125 A.