Industrial 4P 100A Isolator | Westhomes WSH3-125 DIN Rail 20-100A 400V
Westhomes WSH3-125 4P 100A DIN rail isolator switch offers 20-100A current, 400V insulation, 2kA withstand current & -5~+40°C operation for industrial use.
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Industrial 4P 100A Isolator
WSH3-125 4P isolating switch! DIN rail mount, 1P-4P flexible configs, 400V safety & -5~+40°C stable operation.
The Westhomes WSH3‑125 is a compact DIN‑rail mounted miniature isolating switch designed for reliable circuit control and safe power isolation in low‑voltage electrical systems. Available in a 4‑pole 100A version with a full current range of 20A to 100A, it supports flexible 1P, 2P, 3P, and 4P configurations to fit various industrial and commercial wiring setups.
Key Features：
Customization Support: As an original manufacturer, Westhomes offers custom service for pole/config specs, with 24-hour customer support.
Durable Thermosetting Shell: Rigid thermosetting plastic housing (marked in external specs) ensures mechanical strength and heat resistance.
2kA Short-Time Withstand: Robust 2kA short-time withstand current provides reliable protection against temporary overcurrent surges.
400V Insulation Safety: 400V insulation voltage meets strict industrial safety standards, preventing electrical leakage and short-circuit hazards.
Applications:
Data Center Power Distribution
Renewable Energy Installations
Commercial Building Power 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 an Industrial 4P 100A Isolator?
An Industrial 4P 100A Isolator is a manual electrical disconnect device designed to safely isolate power circuits in industrial and low-voltage distribution systems. The 4-pole configuration allows simultaneous disconnection of three phases and neutral, providing complete circuit isolation.
What does 4P mean on a 4P 100A Isolator?
4P means the isolator has four poles. In three-phase electrical systems, a 4-pole isolator can disconnect three phase conductors and the neutral conductor at the same time, ensuring safer isolation during maintenance and inspection.
What is the rated current of a 4P 100A Isolator?
A 4P 100A Isolator has a rated current of 100A, meaning it can carry a continuous current of up to 100A under specified operating conditions. It is suitable for medium-load industrial and commercial electrical applications.
What applications are suitable for an Industrial 4P 100A Isolator?
An Industrial 4P 100A Isolator is commonly used in factories, commercial buildings, machinery control panels, distribution boards, power management systems, and other low-voltage electrical installations requiring reliable isolation.
Why use a 4-pole isolator instead of a 3-pole isolator?
A 4-pole isolator disconnects both the three-phase conductors and the neutral conductor, while a 3-pole isolator only disconnects the three phases. A 4-pole design provides more complete isolation where neutral switching is required.
What is the difference between an isolator and a circuit breaker?
An isolator is mainly used for manual disconnection and safe electrical isolation during maintenance. A circuit breaker provides automatic protection against overloads and short circuits. An isolator should be used together with suitable protective devices when fault protection is required.
Can an Industrial 4P 100A Isolator be used for three-phase systems?
Yes. A 4P 100A Isolator is specifically designed for three-phase systems where complete disconnection of phase and neutral conductors is required. It is commonly used in industrial power distribution applications.
Does a 4P 100A Isolator provide overload protection?
No. An isolator switch does not provide overload or short-circuit protection. Its main function is to disconnect and isolate the circuit. Additional protection devices, such as MCBs or MCCBs, should be installed according to system requirements.
How is an Industrial 4P 100A Isolator installed?
The isolator should be installed in a suitable electrical enclosure, distribution cabinet, or control panel according to the rated voltage, current capacity, wiring configuration, and local electrical standards. Installation should be performed by qualified personnel.
What are the advantages of an Industrial 4P 100A Isolator?
An Industrial 4P 100A Isolator provides reliable manual isolation, complete four-pole disconnection, and safe operation for industrial electrical systems. It helps improve maintenance safety and provides a convenient solution for power isolation in low-voltage applications.
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