Hager Isolator 40A 2P – SBN240
The Hager SBN240 is a 40A, 2-pole isolator (switch-disconnector) used as a main switch or local isolation point ahead of MCBs and RCCBs in a distribution board. It provides safe, manual off-load disconnection for maintenance, testing, or emergency shutdown, and is Made in France to Hager's standard build quality for UAE residential, commercial, and light industrial installations.
Key Features
- 40 A rated current, 2-pole (2P) switch-disconnector for single-phase supplies
- Rated operational voltage 400 V AC, rated insulation voltage 440 V
- Short-circuit making capacity 0.84 kA and 1-second short-time withstand of 0.60 kA
- Compact 2-module DIN rail enclosure (83 x 35 mm), fits standard consumer units and panels
- Biconnect aligned terminals top and bottom, accepting 2.5–16 mm² flexible or 2.5–25 mm² rigid conductors
- IP20 protection, 50–60 Hz operation, -20 °C to 70 °C operating range
- Rated for 60,000 mechanical operations and 5,000 electrical (AC21/AC22) cycles
- Complies with IEC 60947-3 and IEC 60669-2-4; RoHS compliant and REACH-SVHC free
Technical Specifications
| Specification |
Details |
| Brand |
Hager |
| Model |
SBN240 |
| Device Type |
Isolator / Switch-Disconnector (Main Switch) |
| Rated Current |
40 A |
| Poles |
2P |
| Rated Operational Voltage |
400 V AC |
| Rated Insulation Voltage |
440 V |
| Making Capacity |
0.84 kA at 415 V AC |
| Short-Time Withstand |
0.60 kA (1 s) |
| Terminal Type |
Biconnect aligned terminals, top and bottom |
| Conductor Capacity |
2.5–16 mm² flexible / 2.5–25 mm² rigid |
| Mounting Width |
2 modules (83 x 35 mm) |
| IP Rating |
IP20 |
| Frequency |
50–60 Hz |
| Durability |
60,000 mechanical operations / 5,000 electrical cycles (AC21/AC22) |
| Standards |
IEC 60947-3, IEC 60669-2-4 |
| Origin |
Made in France |
Applications
- Main switch / isolation point ahead of an MCB or RCCB distribution board in villas and apartments
- Commercial buildings: offices, retail units, schools
- Light industrial panels requiring a lockable manual disconnect for maintenance
- Any 40A single-phase (2-pole) supply needing off-load isolation
FAQ
-
Is the SBN240 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. Despite being listed under "MCBs" in some catalogue views, the SBN240 is a main switch/isolator and should be paired with separate MCBs or RCCBs for circuit protection.
-
What does 2-pole (2P) mean for this isolator?
2-pole means it switches both the live and neutral conductors together on a single-phase supply, giving full off-load isolation of the circuit rather than switching just the live conductor.
-
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 the SBN240 be used to switch a live circuit under load?
It is rated for on-load switching within its AC21/AC22 utilisation category, but it is not a protective device — it should be operated as an isolator for maintenance and emergency disconnection, not as a substitute for a circuit breaker.
