Stag Isolator 4 Pole, 20 Amp Enclosed IP65, 125x100x85mm (IS4P20)
Description
The Stag IS4P20 Enclosed 4 Pole 20 Amp Isolator is a rotary isolator switch designed to safely disconnect AC power from circuits or equipment. It is commonly used in industrial, commercial, and residential electrical systems for safe isolation of low-to-medium current circuits.
The IS4P20 Enclosed Rotary Isolator is a robust 4-pole AC isolator for three-phase and neutral electrical circuits. Rated at 20A and compliant with IEC / EN 60947-3, it is suitable for industrial, commercial, and renewable energy applications. Its durable IP65 polycarbonate enclosure ensures protection against dust and water ingress, making it ideal for indoor and outdoor use.
Installation
- Ensure the power supply is fully isolated before starting installation.
- Mount the isolator using the external mounting points on the enclosure.
- Confirm the rotary handle is in the OFF position (lid interlocks prevent opening while ON).
- Select appropriate cable entry points and open the required gland knockouts (M20 or M25).
- 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 2 Nm.
- Close the enclosure lid and secure it with 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.
- IP65 Protection: Dust and water jet resistant for indoor/outdoor use.
Notes
- Installation must be done by a qualified electrician according to local regulations.
- Verify correct phase rotation and neutral connection before energizing.
- Intended for isolation purposes, not for frequent load switching.
Technical Specifications
| PARAMETER | SPECIFICATION |
|---|---|
| Model | IS4P20 |
| Poles | 4 Pole |
| Rated Operational Current (AC21) | 20 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) | 5.5 kW |
| Ingress Protection | IP65 (Enclosure), IP20 (Body) |
| Maximum Cable Size | 10 mm² (Solid / Stranded) |
| Enclosure Material | Flame-retardant Polycarbonate |
| Lid Screw Material | Stainless Steel |
| Dimensions (H × W × D) | 125 × 100 × 85 mm |
| Depth (Including Handle) | 120 mm |
| Weight | 0.52 kg |
| Compliance | IEC / EN 60947-3, RoHS |
| Approvals | CE, SEMKO |
Optional Auxiliary Contact
The SAC32-11 auxiliary contact fits IS4P20 and similar low-current isolators. Provides 1 NO and 1 NC contact for control or signaling circuits.
| PARAMETER | SPECIFICATION |
|---|---|
| Part Number | SAC32-11 |
| Contact Configuration | 1 NO, 1 NC |
| Rated Operational Current AC15 (230V) | 6 A |
| Rated Operational Current DC13 (125V) | 1.1 A |
| Rated Operational Current DC13 (250V) | 0.55 A |
| Rated Insulation Voltage (Ui) | 500 V |
| Maximum Fuse | 10 A (gG/gL) |
| Max Cable Size (Solid) | 0.75 – 2.5 mm² |
| Max Cable Size (Flexible w/ Ferrule) | 0.5 – 1.5 mm² |
| Tightening Torque | 0.6 Nm |
| Compliance | IEC / EN 60947-3, RoHS |
| Approvals | CE |
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