OVERVIEW

Official designation: Fuji SA53C (SA Series, Molded Case Circuit Breaker)

Role/Application: A three-pole MCCB providing thermal magnetic protection against overcurrent and short-circuits for industrial 5 A branch circuits, ensuring dependable electrical safety.

KEY SPECS SUMMARY

Power: 690 V AC / 250 V DC

Interfaces / Ports: Screw type line terminals

Indicators: Mechanical trip position flag

Operating Temp: Minus 20 to plus 60 degrees C

Platform / Compatibility: Fixed front panel mounting

Limit: Interrupting capacity 10 kA (Icu) at 400 V AC

Lifecycle: Discontinued (Replacement: BW50SAG-3P005)

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the rated ultimate short-circuit breaking capacities (Icu) for the SA53C at 230 V AC?

A: The ultimate short-circuit breaking capacity (Icu) is 25 kA at 230 V AC for the standard model.

Wiring & Installation:

Q: What common connection components are typically available for the SA53C breaker terminals?

A: Connection options include screw terminals, flat terminals, or lug type terminals.

Troubleshooting & Compatibility:

Q: Which field-installable internal accessories are compatible with the SA53C frame size?

A: Internal accessories include auxiliary switches, alarm switches, and shunt trip devices.

Replacement & Upgrades:

Q: What is the recommended modern product line replacement for the discontinued Fuji SA53C 5 A unit?

A: The replacement is the Fuji Electric BW50SAG-3P series, specifically the BW50SAG-3P005 model.