ABB OT315E04 4-Pole 315A Switch Disconnector
The ABB OT315E04 is a 4-pole, front-operated, base-mounted switch-disconnector rated at 315A, designed for main switching and isolation duties in low voltage distribution systems. Manufactured to IEC 60947-3, it is suited to commercial and industrial panel applications across the UAE where reliable load-break and isolation performance is required in demanding ambient conditions.
Key Features
- 4-pole switch-disconnector rated 315A for AC-21A, AC-22A and AC-23A duty across 380–690V systems
- 65kA rated short-circuit making capacity (Icm) at 690V for robust fault-condition performance
- 1000V rated insulation voltage and 12kV rated impulse withstand voltage for high dielectric strength
- Mechanical durability of 16,000 operating cycles for long-term reliability in frequent-switching applications
- Genuine ABB quality — manufactured in Finland to IEC 60947-3 standards
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
OT315E04 |
| Number of Poles |
4P |
| Rated Operational Current (Ie) AC-23A |
315A (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) |
65kA at 690V |
| Rated Short-Time Withstand Current (Icw) |
15kA for 1s |
| Degree of Protection |
Front IP00 |
| Mounting Type |
Base mounting |
| Operating Mode |
Front operated |
| Terminal Type |
Lug terminals |
| Tightening Torque |
30–44 N·m (acc. IEC 60947-1) |
| Mechanical Durability |
16,000 operations |
| Standards |
IEC 60947-3 |
| Net Weight |
3.5 kg |
| Dimensions (W x H x D) |
235 x 185 x 107 mm |
| Note |
Handle and shaft not included; terminal bolt kit included |
Applications
- Main incomer isolation in low voltage distribution boards
- Load-break switching for motor and feeder circuits in commercial buildings
- Isolation switching in industrial panel builds and switchboards
- Safe isolation point for maintenance in FM-managed facilities across the UAE
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.
