ABB SACE Megamax F6 3 PR111/P N F M air circuit breaker Low Voltage

Here is a detailed breakdown of the ABB SACE Megamax F6 3 PR111/P N F M low voltage air circuit breaker.

This is a highly specific model number for a legacy, high-performance circuit breaker. Let's decode each part of the designation.

Model Number Decoding

Code Segment Meaning Description

SACE ABB Breaker Brand The brand name for ABB's line of low-voltage circuit breakers.

Megamax F Product Series A flagship line of fixed-mount air circuit breakers, now discontinued.

F6 Frame Size This indicates a 3200 Amp frame. This is the physical size and the maximum current the breaker mechanism is designed for.

3 Poles This is a 3-pole breaker (for connecting to a 3-phase system).

PR111/P Tripping Unit An electronic overcurrent release. /P indicates the standard version with Long-time, Short-time, and Instantaneous protection.

N Breaking Capacity "N" stands for "Normal" breaking capacity. For Megamax F, this is still a very high value (e.g., ~70-85 kA at 415V).

F Mounting Style Fixed mounting. The breaker is bolted directly to the busbars and cannot be withdrawn.

M Operating Mechanism Manual charging for the closing spring.

Summary of Specifications

Type: Fixed Mount Air Circuit Breaker (ACB)

Rated Current (Iu): Up to 3200 A (The actual set value is adjusted on the PR111 trip unit)

Poles: 3

Breaking Capacity (Icu): Normal (N) - Very High

Protection Functions: Overload (L), Selective Short-Circuit (S), Instantaneous Short-Circuit (I)

Operation: Manual Spring Charging