Hager SBN490N 90A 4-Pole Modular Isolator
The Hager SBN490N is a 90A 4-pole modular isolator for high-current three-phase + neutral main incoming isolation in UAE commercial and industrial distribution boards. Its 90A rating suits larger incoming circuits in commercial buildings and light industrial panels.
Key Features
- 90A 4-pole modular isolator for 3-phase + neutral isolation
- High-current incoming isolation for commercial and industrial DBs
- DIN rail mounting
- Genuine Hager quality
Technical Specifications
| Specification |
Details |
| Brand |
Hager |
| Model |
SBN490N |
| Rated Current |
90A |
| Poles |
4 |
| Voltage |
415V AC |
| Mounting |
DIN Rail |
Applications
- High-current main incoming isolation in 4-pole commercial DBs
- Three-phase + neutral sub-main isolation
- Industrial and commercial panel incoming switch
- FM and maintenance isolation replacement
FAQ
-
What is a modular isolator used for?
An isolator provides on-load or off-load disconnection of a circuit for maintenance and safety — it does not provide overload or short-circuit protection like an MCB, so it's typically used alongside protective devices, not instead of them.
-
How many poles do I need?
This is a 4-pole, 90A unit. Match the pole count to what you need to isolate — a three-phase supply.
-
Can I install this myself?
No — isolators are installed inside a distribution board and connected to live busbars, and must be fitted by a licensed electrician.
-
Is this the same as a main switch?
It's often used as one — a modular isolator of this type is commonly fitted as the main incomer disconnect on a distribution board, or to isolate a sub-circuit for safe maintenance.
