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Showing Slide 1 of 1: TPH3-125 AC isolator switch front view
TPH3-125 DIN Rail Isolating Switch for Electrical Isolation
High-performance electrical isolating switch for safe disconnection and maintenance isolation in low-voltage distribution systems.
The TPH3-125 DIN rail isolating switch is designed for safe and reliable electrical isolation in low-voltage power distribution systems. Suitable for AC 50/60 Hz, 230/400 V circuits with a rated current of up to 125 A, it is intended for no-load switching and for isolating the power supply during maintenance and servicing. The rail-mounted design enables fast installation in distribution boards and improves overall installation efficiency. Complying with IEC 60947-3, it is widely used in residential, commercial, and industrial applications.
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Feature
- Contact position indication
- Anti-skid handle for easy and reliable operation
- Flame retardant,high temperature resistance and impact resistance
Type designation
TPH3-125 1P C 125A
| TP | B3 | 125 | 1P | C | 125A |
| Company code | Series code | Frame | Poles | Curve | Current(In) |
| TP | B3 | 125 | 1P 2P 3P 4P | B C D | 10A~125A |
Technical Data
| Type | Parameter | Unit | Specification |
| Electrical features | Poles | P | 1,2,3,4 |
| Rated voltage Ue | V | AC230V400V (1P),AC400V415V(2P,3P,4P) | |
| Rated current le | A | 10A,16A,20A,25A,32A,40A,63A,80A,100A,125A | |
| Rated frequency | Hz | 50/60 | |
| Rated impulse withstand voltage(1.2/50)Uimp | V | 4000 | |
| Rated short-time withstand current lcw | 12le,1s | ||
| Rated making and breaking capacity | 3le,1.05Ue,cosΦ=0.65 | ||
| Rated short circuit making capacity | 20le,t=0.1s | ||
| Dielectric test voltage at ind.Freq.for 1min | Kv | 2.5 | |
| Insulation voltage Ui | V | 500 | |
| Pollution degree | 2 | ||
| Use Category | times | AC-22A | |
| Mechanical features | Electrical life | times | 1500 |
| Mechanical life | 8500 | ||
| Protection degree | IP20 | ||
| Installation | Terminal size top/bottom for cable and pin-type busbar | mm2 | 50 |
| AWG | 18-1/0 | ||
| Operating Conditions | Ambient temperature(with daily average≤35℃) | -25~+60 | |
| Altitude | Not higher than 2000m | ||
| Installation Method | Embedded vertical standard rail mounting | ||
| Wiring Method | Clamp connection wire with screw,tightening torque 2.5N.m |
Overall and mounting dimensions(mm)

