Description
Engineered for 125 A feeders, this moulded case circuit breaker delivers dependable short-circuit and overload protection with an 18 kA Icu at common AC voltages. It suits new builds and retrofits alike, and for turnkey boards it integrates cleanly with our industrial panel fabrication to standardize layout and wiring.
Key Specifications – Moulded Case Circuit Breakers
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Model: A1B 125 TMF 125-1250 3P FF 
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Device type: Moulded Case Circuit Breaker 
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Poles: 3P 
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Rated current (In): 125 A 
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Icu: 18 kA at 240 V AC 
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Icu: 18 kA at 380 V AC 
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Mounting: Fixed type (FF) 
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Trip unit: TMF thermal-magnetic 
Highlights
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Higher 18 kA breaking capacity for tougher fault levels 
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Compact frame for dense panel layouts 
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Clear terminal markings for quick installation 
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Reliable TMF protection with simple settings 
Typical Uses
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Main and sub-feeder protection in commercial boards 
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Motor and HVAC branches requiring 18 kA Icu 
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Industrial distribution where fixed mounting is preferred 
Installation & Support
Ships ready to install with documentation covering conductor sizing, coordination, discrimination, and thermal management.
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Rapid fulfillment from managed inventory 
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Optional commissioning assistance and maintenance plans 
 
					 
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