125a 4-poles eaton main switch

Listing ID #7323150

• Ambient operating temperature - max; 40 °C 
• -Ambient operating temperature - min; -5 °C
• -Amperage rating; 125 A
•  -Application; Switchgear for industrial and advanced commercial applications 
• -Built-in depth; 69.5 mm 
• -Degree of protection; IP40 
• -EL number; 1460861

MCB is an automatically-operated circuit breaker for overload and short circuit protection, while an Isolator is a manually-operated device for simply breaking off the circuit. They are usually connected to the main power supply to break the circuit when needed.