| Attribute | Value |
|---|---|
| Brand | Terasaki Electric Co., Ltd. |
| Device Type | UVT Control Device |
| Model | ARU-24D |
| Line Voltage | 1-2 AC 450 V |
| Frequency | 50, 60 Hz |
| Delay Time | 0.5 sec at 450 V |
| Output Voltage | 3-5 Approx. DC 13 V |
| Serial Number | NA-8418-5 |
| Code | C196411 |
| Weight | 1.050 kg |
What is the TERASAKI ARU-24D UVT Control Device?
The ARU-24D is an Under Voltage Trip (UVT) device from Terasaki, a world leader in switchgear and circuit protection technologies. This UVT product is meant to cause an automatic tripping of a circuit breaker when the voltage falls below a certain level, thus avoiding potential damage to attached machinery or equipment from low voltage.
This is particularly critical in delicate industrial settings, where voltage drops can lead to unstable operation of machines, overheating, or even complete system collapse.
Features of the ARU-24D
Following are the major features that make the ARU-24D a go-to option:
Rated Voltage: 24V DC – Suitable for control circuits that run on low-voltage DC systems.
Quick Response Time – Trips circuit breakers fast when voltage drops are sensed.
Compact and Long-Lasting Design – Designed for extended usage even in unforgiving industrial settings.
Safe Protection – Safeguards motors, pumps, control panels, and other interconnected equipment.
Straightforward Integration – Integrates seamlessly into Terasaki circuit breakers such as TemBreak series.
Why Under-Voltage Trip Devices Are Important
Most electrical malfunctions are brought about not only by overcurrent but by undervoltage conditions, particularly in remote or unstable power supply areas. The ARU-24D:
- Prevents motor burnout through the disconnection of circuits during voltage sag.
- Improves system safety through automatic tripping without the need for human intervention.
- Eliminates expensive downtimes due to equipment damage or overheating.
- It silently plays a very important role in averting such problems, hence it is a must-have component for seamless industrial operation.






