ABB BW440TPSN Enclosed Isolator 40A 4-Pole Grey
The ABB BW440TPSN is a 40A 4-pole enclosed modular isolator in a grey plastic enclosure for surface-mounting in UAE buildings. It provides main incoming isolation for three-phase + neutral circuits in a self-contained IP-rated enclosure, suitable for residential, commercial, and light industrial applications.
Key Features
- 40A 4-pole isolator in a compact grey enclosed housing
- Self-contained enclosure — no separate enclosure required
- Suitable for three-phase + neutral main incoming isolation
- Surface-mounting for walls and panels
- Genuine ABB quality
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
BW440TPSN |
| Rated Current |
40A |
| Poles |
4 |
| Enclosure |
Grey Plastic |
| Voltage |
415V AC |
| Mounting |
Surface |
Applications
- Main incoming isolation for three-phase residential and commercial boards
- Surface-mounted isolation switches in buildings
- Sub-main isolation in commercial facilities
- Consumer unit and DB main switching
FAQ
-
Is this an MCB or an isolator?
It's an isolator (switch-disconnector), not an MCB. It has no overload or short-circuit protection — it only provides a manual on/off disconnect, and should be paired with separate MCBs or RCCBs for circuit protection.
-
What does 4-pole mean for this isolator?
4-pole means it switches all three phases plus neutral, for supplies where the neutral must also be isolated.
-
Where should this isolator be installed?
Typically as the main incoming switch or a local isolation point ahead of the MCBs/RCCBs in a distribution board, so the whole board (or a section of it) can be isolated for maintenance without needing to trip individual breakers.
-
Can I install this myself?
No. This is trade-only distribution board equipment and must be installed and connected by a licensed electrician in accordance with local wiring regulations.
-
Can this isolator be used to switch a live circuit under load?
Isolators rated for on-load switching can do this within their utilisation category, but check the specific AC rating in the Technical Specifications table — an isolator is not a protective device and should not substitute for a circuit breaker.
