ABB OT125F3 Switch-Disconnector 1SCA105033R1001 ABB
ABB OT125F3 Switch-Disconnector 1SCA105033R1001 ABB
ABB OT125F3 Switch-Disconnector 1SCA105033R1001 ABB
ABB OT125F3 Switch-Disconnector 1SCA105033R1001 ABB

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ABB

ABB OT125F3 Switch-Disconnector 1SCA105033R1001

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AED 246.00 inc. VAT
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ABB OT125F3 3-Pole 125A Switch Disconnector

The OT125F3 is a 3-pole, front-operated switch disconnector rated at 125A, suitable for both base and DIN-rail mounting. Built with front-protected clamp terminals for safe installation, it provides reliable local isolation for distribution circuits and machinery in commercial and industrial panel builds across the UAE.

Key Features

  • 3-pole switch disconnector rated up to 125A (AC-21A) for flexible use across single and three-phase circuits
  • Front-protected clamp terminals accepting cable cross-sections from 10 to 70 mm² for secure, safe wiring
  • Mechanical durability of 20,000 operating cycles for long-term reliability in frequent-switching applications
  • Compact base/DIN-rail mounting design suited to space-constrained distribution boards and enclosures
  • Genuine ABB quality — manufactured in Finland to IEC 60947-3 standards

Technical Specifications

Specification Details
Brand ABB
Model OT125F3
Number of Poles 3P
Rated Operational Current (Ie) AC-21A 125A (380–690V)
Rated Operational Current (Ie) AC-23A 90A (380–415V)
Rated Operational Voltage 750V (main circuit)
Rated Insulation Voltage (Ui) 750V
Rated Impulse Withstand Voltage (Uimp) 8kV
Rated Short-Circuit Making Capacity (Icm) 3.6kA at 690V
Rated Short-Time Withstand Current (Icw) 2.5kA for 1s
Rated Conditional Short-Circuit Current 50kA (125A fuse, 415V)
Degree of Protection Front IP20
Mounting Type Base mounting / DIN-rail
Operating Mode Front operated
Terminal Type Screw terminals
Cable Cross-Section Cu 10 – 70 mm²
Tightening Torque 6 N·m (acc. IEC 60947-1)
Mechanical Durability 20,000 operations
Standards IEC 60947-3
Net Weight 0.36 kg
Dimensions (W x H x D) 70 x 100 x 74 mm
Note Handle and shaft not included

Applications

  • Main or local isolation in low voltage distribution boards
  • Load-break switching for motor and feeder circuits in commercial buildings
  • Isolation switching in compact 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.

Orders placed before 12 PM (UAE time) are dispatched the same business day and delivered in 1–2 business days across the UAE. Delivery is free on orders over AED 200; below that it costs AED 15. International shipping is charged by weight at checkout, and international orders cannot be returned. Read our Shipping Policy and Refund Policy.

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