Stag Isolator 4 Pole, 125 Amp Enclosed IP65 (IS4P125)
Description
The Stag IS4P125 Enclosed 4 Pole 125 Amp Isolator is a rotary isolator switch used in electrical installations to safely disconnect AC power from circuits or equipment. It’s a common safety device in industrial, commercial, and residential electrical systems.
The IS4P125 Enclosed Rotary Isolator is a robust 4-pole AC isolator designed for the safe and reliable isolation of three-phase and neutral electrical circuits. Rated at 125A and compliant with IEC / EN 60947-3, it is ideal for industrial, commercial, and renewable energy installations. The durable IP65 polycarbonate enclosure provides excellent protection against dust and water ingress, making it suitable for both indoor and outdoor environments.
Installation
- Ensure the power supply is fully isolated before beginning installation.
- Mount the isolator using the external mounting points provided on the enclosure.
- Confirm the rotary handle is in the OFF position (the lid is interlocked and can only be opened when OFF).
- Select suitable cable entry points and open the required gland knockouts (M20, M25, or M32).
- Connect incoming supply cables to terminals L1, L2, L3, and N.
- Connect outgoing load cables to terminals T1, T2, T3, and N.
- Terminate the earth conductor using the additional earth connection.
- Tighten terminal screws to the recommended torque of 3 Nm.
- Close the enclosure lid and secure it with the stainless-steel screws.
- Rotate the handle to the ON position to energize the circuit.
Operating Features
- 4-Pole Isolation: Disconnects all three phases and neutral simultaneously.
- Lockable Rotary Handle: Can be padlocked in the OFF position for maintenance safety.
- Interlocked Enclosure Lid: Prevents access to live parts when the switch is ON.
- Flame-Retardant Enclosure: Enhances fire safety in demanding environments.
- IP65 Protection: Resistant to dust and water jets for outdoor or industrial use.
Notes
- Installation should be carried out by a qualified electrician in accordance with local regulations.
- Always verify correct phase rotation and neutral connection before energizing the system.
- The isolator is intended for isolation purposes only and not for frequent load switching.
Technical Specifications
| PARAMETER | SPECIFICATION |
|---|---|
| Model | IS4P125 |
| Poles | 4 Pole |
| Rated Operational Current (AC21) | 125 A |
| Rated Operating Voltage | 230 – 440 V AC |
| Rated Voltage | 415 V |
| Frequency | 50 / 60 Hz |
| Rated Insulation Voltage (Ui) | 690 V |
| Rated Power (3-Phase Motor @ 415V, AC23A) | 45 kW |
| Ingress Protection | IP65 (Enclosure), IP20 (Body) |
| Maximum Cable Size | 35 mm² (Solid / Stranded) |
| Enclosure Material | Flame-retardant Polycarbonate |
| Lid Screw Material | Stainless Steel |
| Dimensions (H × W × D) | 240 × 160 × 120 mm |
| Depth (Including Handle) | 165 mm |
| Weight | 1.34 kg |
| Compliance | IEC / EN 60947-3, RoHS |
| Approvals | CE, SEMKO |
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