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KSF325TPNNO Fireman switch
ABB KSF325TPNNO 3-pole fireman switch with IP65 silumin aluminium enclosure, 25 A AC-22A rating, 16 A AC-23A rating, integrated 1 NO auxiliary contact and 7.5 kW motor switching capacity.
£108.76
Why Choose the ABB 2CMA142442R1000 Fireman Switch?
The ABB 2CMA142442R1000 is a heavy-duty 3-pole enclosed fireman switch designed to provide safe and reliable emergency isolation of three-phase electrical installations. The KSF325TPNNO forms part of ABB's trusted KSF fireman switch range and is specifically developed for photovoltaic (PV) systems, commercial buildings and industrial applications where rapid emergency power disconnection is essential.
Manufactured from a rigid silumin aluminium enclosure with UV-protected paint, the switch is suitable for demanding indoor and outdoor environments. The IP65-rated enclosure, interlocked cover and padlockable fireman's operating handle provide dependable protection against dust and water ingress while supporting safe emergency operation. Threaded cable entries on both the top and bottom simplify installation using compression glands where full IP65 protection is required.
Rated at 25 A AC-22A and 16 A AC-23A at 415 V AC with a motor switching capacity of up to 7.5 kW, the ABB KSF325TPNNO is ideal for photovoltaic systems, inverter isolation, industrial machinery and commercial electrical installations. Unlike the standard KSF325TPN, this model is supplied with a factory-fitted 1 NO auxiliary contact for signalling and control applications.
Key Advantages
- Heavy-duty 3-pole enclosed fireman switch.
- 25 A AC-22A / 16 A AC-23A switching capability.
- Integrated 1 NO auxiliary contact.
- Robust IP65 silumin aluminium enclosure.
- Padlockable fireman's operating handle with interlocked cover.
- Suitable for indoor and outdoor photovoltaic and industrial installations.
Key Features
- ABB KSF Fireman Switch series.
- Model KSF325TPNNO.
- Order code 2CMA142442R1000.
- 3-pole switch disconnector.
- 25 A AC-22A rating.
- 16 A AC-23A motor duty rating.
- 7.5 kW motor switching capacity at 415 V AC.
- Factory-fitted 1 NO auxiliary contact.
- IP65 silumin aluminium enclosure.
- Padlockable fireman's operating handle.
- Interlocked enclosure cover.
- Fixed neutral terminal and PE terminal included.
- 2 × M25 threaded cable entries top and bottom.
Reliable Emergency Isolation for Photovoltaic and Industrial Installations
Fireman switches provide emergency services and maintenance personnel with a clearly identifiable means of disconnecting electrical power during emergencies. Their distinctive operating handle enables rapid isolation while supporting safe working practices and protecting critical electrical infrastructure.
The ABB KSF325TPNNO combines ABB's proven switch-disconnector technology with a rugged aluminium enclosure and integrated auxiliary contact, making it an excellent choice for renewable energy systems, industrial facilities and commercial buildings requiring dependable emergency isolation.
Typical Applications
- Photovoltaic (PV) installations.
- Solar inverter isolation.
- Commercial electrical systems.
- Industrial machinery isolation.
- Building services and HVAC equipment.
- Renewable energy installations.
Technical Specifications
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| Material | Aluminium | |
|---|---|---|
| Device Type | Enclosed switch disconnector | |
| Power | 7.5 kW | |
| Current | 32 A | |
| Phase | Three Phase | |
| IP Rating | IP65 | |
| Poles | 3-pole | |
| Manufacturer | ABB | |
| Series | KSF Fireman Switches | |
| Model | KSF325TPNNO | |
| Order number | 2CMA142442R1000 | |
| Product type | Enclosed fireman switch | |
| Rated current (AC-22A) | 25 A | |
| Rated current (AC-23A @ 415 V) | 16 A | |
| Motor switching capacity | 7.5 kW | |
| Maximum operating voltage | 690 V AC | |
| Number of poles | 3 | |
| Auxiliary contacts | 1 NO included | |
| Protection rating | IP65 | |
| Enclosure material | Silumin aluminium alloy | |
| Cable entries | 2 × M25 top / 2 × M25 bottom | |
| Neutral terminal | Fixed | |
| Protective earth terminal | Included | |
| Terminal capacity | 0.75 to 10 mm² screw clamp terminals | |
| Mounting type | Surface mounting | |
| Dimensions (H × W × D) | 130 × 111 × 60 mm | |
| Weight | Approx. 0.60 kg |
Frequently Asked Questions
What is the ABB 2CMA142442R1000 used for?
It provides emergency isolation of three-phase electrical circuits, particularly within photovoltaic systems, commercial buildings and industrial installations.
Does this model include an auxiliary contact?
Yes. The KSF325TPNNO is supplied with a factory-fitted 1 NO auxiliary contact for signalling and control applications.
Is it suitable for outdoor installation?
Yes. The silumin aluminium enclosure is rated IP65 and is suitable for indoor and outdoor use when installed with suitable compression cable glands.
Can the operating handle be padlocked?
Yes. The fireman's operating handle is padlockable in the OFF position to support safe lockout procedures.
Where is this fireman switch commonly installed?
It is widely installed on photovoltaic systems, renewable energy installations, commercial buildings and industrial facilities requiring reliable emergency electrical isolation.
Trusted by Electrical Professionals Worldwide
ABB fireman switches are trusted by renewable energy installers, electrical contractors and industrial engineers worldwide for delivering dependable emergency isolation, robust construction and long-term operational reliability.
