ABB OT1600E03P 3-Pole 1600A Switch Disconnector
The OT1600E03P is a heavy-duty 3-pole switch disconnector rated at 1600A, complete with a black IP65-rated handle and shaft plus terminal bolt kit for straightforward installation. Built for main isolation duty in high-current distribution systems, it is well suited to large commercial and industrial switchboards, substations, and main incomer applications across the UAE.
Key Features
- 3-pole switch disconnector rated 1600A (AC-21A/AC-22A) with 1250A rating for AC-23A motor-type loads
- Black IP65-rated handle and shaft included, along with terminal bolt kit for fast, complete installation
- 110kA rated short-circuit making capacity (Icm) and 50kA short-time withstand current for demanding fault conditions
- 1000V rated insulation voltage and 12kV rated impulse withstand voltage for high dielectric strength
- Genuine ABB quality — manufactured in Finland to IEC 60947-3 standards
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
OT1600E03P |
| Number of Poles |
3P |
| Rated Operational Current (Ie) AC-21A/AC-22A |
1600A (380–690V) |
| Rated Operational Current (Ie) AC-23A |
1250A (380–690V) |
| Rated Operational Voltage |
1000V (main circuit) |
| Rated Insulation Voltage (Ui) |
1000V |
| Rated Impulse Withstand Voltage (Uimp) |
12kV |
| Rated Short-Circuit Making Capacity (Icm) |
110kA at 690V |
| Rated Short-Time Withstand Current (Icw) |
50kA for 1s |
| Rated Conditional Short-Circuit Current |
80kA (1250A fuse, 415V) |
| Degree of Protection |
Front IP20 (handle IP65) |
| Mounting Type |
Base mounting |
| Operating Mode |
Front operated |
| Terminal Type |
Lug terminals, 50mm width |
| Tightening Torque |
50–75 N·m (acc. IEC 60947-1) |
| Mechanical Durability |
6,000 operations |
| Standards |
IEC 60947-3 |
| Net Weight |
17.6 kg |
| Dimensions (W x H x D) |
334.5 x 372 x 167 mm |
| Note |
Handle, shaft, and terminal bolt kit included |
Applications
- Main incomer isolation in large low voltage switchboards and substations
- High-current load isolation for major feeders in industrial facilities
- Main disconnect switching in generator and transformer-fed distribution systems
- Safe isolation point for maintenance on high-capacity electrical infrastructure in UAE facilities
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 3-pole mean for this isolator?
3-pole means it switches all three phases on a three-phase supply.
-
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.
