ABB E 91/32 1-Pole 32A Fuse Switch Disconnector
The E 91/32 is a 1-pole DIN rail mounted fuse switch disconnector designed for overcurrent and short circuit protection using 10x38 mm cylindrical fuse links. Rated at 32A, it combines a fuse holder with a switching function, allowing safe isolation of the protected circuit before fuse replacement. It is a practical solution for distribution boards and control panels across UAE commercial and industrial installations where cylindrical fuse protection is preferred.
Key Features
- 1-pole fuse switch disconnector rated for 32A, accepting 10x38 mm cylindrical fuse links
- Padlockable when open, supporting safe lock-out/tag-out procedures during maintenance
- Compact 18 mm width (1 modular spacing) for space-efficient DIN rail installation
- Rated insulation voltage of 1kV and operating temperature range of -5°C to +40°C, suited to UAE ambient conditions
- Genuine ABB quality
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
E 91/32 |
| Poles |
1P |
| Rated Operational Current (Ie) |
32A |
| Fuse Size |
10x38 mm |
| Rated Voltage (Ur) |
400V (IEC) / 690V (UL) |
| Rated Insulation Voltage (Ui) |
1 kV |
| Rated Frequency |
50/60 Hz |
| Lock Type |
Padlockable when open |
| Degree of Protection |
IP20 |
| Mounting |
DIN Rail |
| Conductor Material |
Copper |
| Connecting Capacity |
Rigid 2x5 mm² / Stranded 2x2-5 mm² |
| Net Weight |
61 g |
Applications
- Overcurrent and short circuit protection in distribution boards using cylindrical fuses
- Isolation point for maintenance on protected circuits in commercial UAE installations
- Fuse-based circuit protection in panel builder assemblies as an alternative to MCBs
- Retrofit fuse holder replacement in existing DIN rail distribution boards
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.
-
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.
