WSH3-125 Power Isolator Switch | Westhomes 230/400V 1P-4P
Westhomes WSH3-125 isolator switch features 1P-4P, 32A-100A, 400V insulation & 2kA short-time withstand current. Operates -5~+40°C for industrial/commercial safety.
Get quick appointment for technical support!
WSH3-125 Power Isolator Switch
Westhomes WSH3-125 isolator switch features 1P-4P, 32A-100A, 400V insulation & 2kA short-time withstand current. Operates -5~+40°C for industrial/commercial safety.
The Westhomes WSH3‑125 is a high‑quality miniature isolator switch built with premium copper components for reliable power isolation and circuit control. It supports a wide rated current range from 20A to 100A and offers flexible 1P, 2P, 3P, and 4P configurations to match different single‑phase and three‑phase electrical systems.
Key Features：
Premium Copper Core Construction: High-quality copper components deliver superior conductivity and long-term durability for consistent performance.
Safety & Security Features: Equipped with a lock device and pull rod to prevent accidental power transmission, ensuring safe maintenance and operation.
Durable Thermosetting Shell: Robust thermosetting plastic shell offers high mechanical strength and resistance to heat/impact.
28 Years Manufacturing Expertise: Backed by Westhomes’ 28 years of experience, with ISO, CE, and CCC certifications for quality assurance.
Applications:
Renewable Energy Installations
Residential Complex Networks
Commercial Building Systems
Main Technical Parameters
| Model | WSH3-10018model;WSH3-10027model |
| Rated Current In(A) | 32、40、50、63、80、100 |
| Poles | 1P、2P、3P、4P |
| Selective categories | AC-22A |
| NominalInsulation Voltage Ui(V) | 690 |
| Rated OperationalVoltage Ue(V) | AC230V/AC400V |
| Rated Impulse Withstandvoltage Uimp(kV) | 4 |
| Rated Short Time Current lcw(kA)/1S | 1.2 |
| Rated Short-Circuit AbilityIcm(kA) | 2 |
| Mechanical Endurance | 20000 |
| Electrical Endurance | 10000 |
Packaging and delivery
| Selling Units | Single item |
Lead time
| Quantity (pieces) | 1 – 1,000 | > 1,000 |
| Lead time (days) | 30 | To be negotiated |
Key attributes
| Rated Voltage | 230 V, 400 V |
| Material | Copper |
| Place of Origin | Zhejiang, China |
| Type | Switches |
| Model Number | WSH3-125 |
| Brand Name | Westhomes |
155 MBFREQUENTLY ASKED QUESTION (FAQ)
What is the Westhomes WSH3-125 Power Isolator Switch?
The Westhomes WSH3-125 Power Isolator Switch is a manual disconnect device designed to safely isolate electrical circuits from the power supply. It is used in low-voltage distribution systems for power control, maintenance isolation, and equipment safety.
What is the rated current of the WSH3-125 Power Isolator Switch?
The WSH3-125 Power Isolator Switch is designed for applications up to 125A rated current. It is suitable for electrical systems that require reliable manual switching and circuit isolation.
What does WSH3-125 mean in the isolator switch model?
WSH3-125 indicates the product series and rated current. The WSH3 series represents the isolator switch family, while 125 refers to the maximum rated current of 125A.
What applications are suitable for the WSH3-125 Power Isolator Switch?
The WSH3-125 is suitable for residential, commercial, and industrial low-voltage applications, including distribution panels, control cabinets, machinery power isolation, and electrical equipment maintenance systems.
What is the difference between a power isolator switch and a circuit breaker?
A power isolator switch is mainly used for manually disconnecting circuits and providing safe electrical isolation. A circuit breaker provides automatic protection against overload and short circuits. Isolator switches are often installed together with protective devices to ensure complete electrical safety.
Can the WSH3-125 Power Isolator Switch be used in three-phase systems?
Yes. The WSH3-125 is available with multi-pole configurations suitable for different electrical systems. Three-pole and four-pole versions can be used for three-phase applications where reliable power isolation is required.
Does the WSH3-125 provide overload or short-circuit protection?
No. The WSH3-125 Power Isolator Switch is designed for isolation and manual switching functions only. It does not trip automatically during overload or short-circuit conditions, so additional protection devices should be installed when required.
Why is a power isolator switch important in electrical systems?
A power isolator switch provides a safe and visible method to disconnect power before maintenance, inspection, or repair work. It helps prevent accidental energization and improves operational safety for electrical equipment.
How is the WSH3-125 Power Isolator Switch installed?
The WSH3-125 should be installed in a suitable electrical enclosure, distribution board, or control panel according to the rated voltage, current capacity, wiring requirements, and applicable electrical standards.
Why choose the Westhomes WSH3-125 Power Isolator Switch?
The Westhomes WSH3-125 Power Isolator Switch offers reliable isolation performance, durable construction, and flexible application options. It provides a safe and efficient solution for manual power disconnection in low-voltage electrical distribution systems.
RELATED PROJECTS
REQUEST
YOUR FREE QUOTE
* indicates a required field
