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KSF440TPSN Fireman switch
ABB KSF440TPSN four-pole 40 A fireman switch with IP65 aluminium enclosure for emergency electrical isolation in commercial and industrial installations.
£114.58
Why Choose the ABB KSF440TPSN Fireman Switch?
The ABB 2CMA142439R1000, also known as the KSF440TPSN, is a heavy-duty four-pole fireman switch designed to provide rapid and reliable electrical isolation during emergency situations. It is specifically developed for disconnecting power to illuminated signs, commercial buildings, industrial equipment and other installations where emergency services require safe access to electrical systems.
Manufactured as part of the ABB KSF fireman switch range, the KSF440TPSN features a durable aluminium enclosure with a highly visible red finish and a side-operated handle designed for use with a fireman's hook. Its robust construction and IP65 protection rating make it suitable for demanding indoor and outdoor installations exposed to dust and water.
With a rated operational current of 40 A and an operational voltage of up to 690 V AC, this four-pole switch provides dependable isolation for three-phase systems including the neutral conductor. Its padlockable operating handle and interlocked cover help improve safety during maintenance and emergency isolation procedures.
Key Advantages
- Purpose-built four-pole fireman switch for emergency isolation.
- 40 A rated operational current for commercial and industrial applications.
- Suitable for systems operating up to 690 V AC.
- IP65-rated enclosure for reliable indoor and outdoor performance.
- Switches all four conductors simultaneously for complete circuit isolation.
- Highly visible red enclosure for rapid identification during emergencies.
- Padlockable operating handle helps prevent unauthorised operation.
- Robust aluminium construction designed for long service life.
Key Features
- ABB KSF440TPSN fireman switch.
- Four-pole switching configuration.
- 40 A rated operational current.
- 690 V AC maximum operational voltage.
- Suitable for switching loads up to approximately 15 kW.
- IP65 enclosure protection.
- Rigid aluminium alloy enclosure with UV-resistant red finish.
- Padlockable side-operated emergency handle.
- Interlocked cover for enhanced operator safety.
- Threaded cable entries at the top and bottom.
- Designed in accordance with IEC 60947-3.
Reliable Emergency Isolation for Commercial Installations
Fireman switches provide emergency services with a safe and convenient means of disconnecting electrical supplies before firefighting or rescue operations begin. The ABB KSF440TPSN isolates all four conductors simultaneously, making it particularly suitable for three-phase systems where complete isolation, including the neutral conductor, is required.
Its durable aluminium enclosure, UV-resistant finish and IP65 ingress protection ensure dependable operation in exposed outdoor environments, while the interlocked cover and padlockable handle provide additional safety during servicing and maintenance.
Typical Applications
- Commercial buildings.
- Illuminated signs and advertising displays.
- External lighting installations.
- Retail premises.
- Industrial facilities.
- Warehouses and logistics centres.
- Public buildings.
- Entertainment venues.
- Three-phase electrical installations requiring emergency isolation.
Technical Specifications
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| Material | Aluminium | |
|---|---|---|
| Device Type | Enclosed switch disconnector | |
| Power | 11 kW | |
| Current | 40 A | |
| Phase | Three Phase | |
| IP Rating | IP65 | |
| Poles | 4-pole | |
| Manufacturer | ABB | |
| Series | KSF | |
| Model | KSF440TPSN | |
| Product ID | 2CMA142439R1000 | |
| Product type | Enclosed fireman switch / switch disconnector | |
| Number of poles | 4 | |
| Rated operational current | 40 A | |
| Maximum operational voltage | 690 V AC | |
| Switching power | approx. 15 kW | |
| Electrical phase | Three phase with switched neutral | |
| Protection rating | IP65 | |
| Enclosure material | Aluminium alloy | |
| Enclosure colour | Red | |
| Terminal type | Screw clamp cable terminals | |
| Cable entries | 2 × M32 (top), 2 × M32 + 1 × M16 (bottom) | |
| Handle type | Side-operated fireman handle | |
| Padlock compatibility | Yes | |
| Installation | Surface mounting | |
| Dimensions (H × W × D) | approx. 168 × 136 × 68 mm | |
| Weight | approx. 0.83 kg | |
| Standard | IEC 60947-3 | |
| EAN | 7392696424394 |
Frequently Asked Questions
What is the ABB 2CMA142439R1000 used for?
The ABB KSF440TPSN is a four-pole fireman switch used to safely disconnect electrical power during emergencies or maintenance.
What is the rated current of the KSF440TPSN?
The switch has a rated operational current of 40 A.
What voltage can this fireman switch operate at?
The KSF440TPSN is designed for systems operating up to 690 V AC.
Can the switch be installed outdoors?
Yes. Its IP65-rated aluminium enclosure provides protection against dust and water, making it suitable for indoor and outdoor installations.
Why is this a four-pole fireman switch?
The four-pole design isolates all three phase conductors together with the neutral conductor, providing complete electrical isolation where required.
Trusted for Emergency Electrical Isolation
ABB KSF fireman switches are widely specified for commercial and industrial installations where dependable emergency isolation, robust construction and long-term reliability are essential.
