T Rotary Switches up to 315 A – Flexible for All Switching Functions
The modular system is particularly flexible and enables a wide range of different combinations and types.
T rotary switches are available for rated uninterrupted currents from 10 A to 315 A in three basic designs:
- Flush mounting (front fixing)
- Centre mounting (base fixing with coupling)
- Surface mounting (insulated enclosure).
Each of these basic forms offer several variants. Mounting in central control or distribution panels and as main switches or main switches used as Emergency-Stop devices to IEC/EN 60 204-1, VDE 0113 Part 1.
T rotary switches can be used in a wide range of applications as:
Auxiliary circuit control switches
T rotary switches for auxiliary circuits simplify command functions at central locations. For example, a particular program can be selected from a control station, thus saving time and providing a clear central overview of the production process.
Coding, step, series and manual/automatic switches are common applications for auxiliary-circuit control switches. T0 rotary switches and TM mini rotary switches are particularly suitable for this purpose, with space-saving installation.
With up to 22 contacts and 12 switch positions, the T0 handles a wide range of switching tasks. The small dimensions of the TM make it ideally suitable for use in conjunction with the RMQ-Titan command and signalling range.Maintenance, repair and safety switches
A number of padlocks may be fitted in the Off position. Disconnection is therefore visible, and the equipment cannot be switched on again.
T rotary switches and P switch-disconnectors provide reliable service for lighting and heating systems, motors etc. in accordance with utilisation category AC-3, as well as in applications requiring a high switching capacity and switching frequency.
Other typical applications for T rotary switches include:
- Star-delta motor starting circuits with or without reversing and with or without a contactor interlock.
- Motor speed variation (tapped windings) for two, three or four speeds, with or without reversing.
- Switching a load between two power systems, or connecting one power system to two loads using the same switch.
- Three-phase motor starting on a single-phase power system with a capacitor.
- Stepped switching for any required number of loads, with or without a zero position.
- Ammeter switching for measurement directly or via current transformers.