Description

The ABB 1SDA066548R1 is a reliable three-pole moulded-case circuit breaker (MCCB) from ABB’s Formula A2B 250 series. It’s rated for 125 A continuous current and features a TMF (thermo-magnetic fixed) trip unit with a current setting range from 125 A up to 1250 A, providing dependable protection against both overloads and short-circuits. 

Designed for industrial and commercial power systems, this MCCB has a breaking capacity (Icu) of 25 kA @ 240 V AC and 18 kA @ 380–415 V AC, making it suitable for high-fault environments. 

Other key specs:

• Rated insulation voltage (Ui): 690 V 

• Rated operational voltage: 550 V AC / 250 V DC 

• Electrical durability: 4,000 cycles; Mechanical durability: 10,000 operations 

• Power loss: 7 W per pole 

• Compact form factor: 105 mm (W) × 150 mm (H) × 60 mm (D) 

This breaker is ideal for distribution boards, control panels, and other environments where reliable circuit protection is needed — especially in industrial or commercial settings.