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ABB OT100F3
The ABB OT100F3 is a high-performance 100A rotary switch disconnector engineered for demanding industrial power distribution. Designed with a 3-pole configuration and a specialized AC-23A utilization rating, it excels in the safe switching of highly inductive motor loads. Its Finnish engineering, combined with a compact thermoplastic housing and IP65-ready durability, makes it the gold standard for reliable galvanic isolation in 415V 3-phase systems.
Quick Answer
The ABB OT100F3 is primarily used as a main manual isolator or motor emergency switch in industrial control panels, supporting up to 100A on 3-phase 415V circuits.
✓High 100A current rating optimized for industrial-scale power distribution.
✓AC-23A utilization category ensures safety when switching heavy motor loads.
✓Versatile dual-mounting design: compatible with both DIN Rail and Panel mounting.
✓Robust IP65 protection level suitable for harsh, dust-prone environments.
✓Precision-engineered in Finland for superior mechanical life and contact reliability.
Select the ABB OT100F3 if you require a rugged, Finnish-made 100A isolator that handles inductive loads with ease and offers the flexibility of DIN rail or panel mounting in a compact footprint.
✓ Who Should Buy
- •Industrial panel builders needing a space-efficient 100A 3-pole isolation solution.
- •Maintenance teams requiring a reliable LOTO switch for motor control centers.
- •Electrical contractors working on 415V 3-phase industrial retrofits.
✕ Who Should Avoid
- •Residential users looking for a simple circuit breaker (this switch does not provide overcurrent protection).
- •Applications requiring DC switching or voltages exceeding 415V AC without further derating analysis.
Product Overview
The ABB OT100F3 stands as a cornerstone in the OT series of rotary switch disconnectors, offering a compact yet powerful solution for 100A circuits. Built with premium flame-retardant thermoplastic and featuring a direct-mount rotary operation, this switch provides clear visual confirmation of contact state—a critical safety feature for lockout-tagout (LOTO) procedures. Its unique design allows it to fit seamlessly into modern modular enclosures or traditional industrial panels, providing engineers with maximum installation flexibility.
Beyond basic switching, the OT100F3 is thermally optimized for 415V systems, minimizing power loss and preventing heat buildup during continuous operation. The screw terminal design is engineered for high-torque connections, significantly reducing the risk of arcing in high-vibration settings. As a non-fused disconnector, it focuses purely on high-cycle mechanical reliability, making it an essential component for machinery control and sub-distribution boards where safety and uptime are non-negotiable.
| Brand | ABB |
| Model Name | OT100F3 |
| Type | Main Switch Disconnector |
| Series | OT Rotary Switch Disconnector |
| Housing Material | Thermoplastic |
| Country Of Origin | Finland |
| Release Year | 2000 |
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Engineering Analysis
The OT100F3's internal architecture features a 3-pole synchronized breaking mechanism, ensuring all phases disconnect simultaneously to prevent single-phasing of downstream equipment. The housing material is a high-grade thermoplastic that maintains dielectric strength even under extreme thermal stress. Furthermore, the rotary operation is designed with a 'snap-action' feel, which prevents 'teasing' of the contacts and ensures a rapid, clean break of the electrical arc, extending the electrical life of the switch significantly compared to standard toggle alternatives.
Technical Support & FAQs
Engineering Analysis
The OT100F3's internal architecture features a 3-pole synchronized breaking mechanism, ensuring all phases disconnect simultaneously to prevent single-phasing of downstream equipment. The housing material is a high-grade thermoplastic that maintains dielectric strength even under extreme thermal stress. Furthermore, the rotary operation is designed with a 'snap-action' feel, which prevents 'teasing' of the contacts and ensures a rapid, clean break of the electrical arc, extending the electrical life of the switch significantly compared to standard toggle alternatives.