ABB SACE Megamax F4 4 PR113/D L F air circuit breaker Low Voltage

Here is a detailed breakdown of the ABB SACE Megamax F4 4 PR113/D L F low voltage air circuit breaker.

This is a specific model number for a high-performance, legacy air 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.

F4 Frame Size This indicates a 2000 Amp frame. This is the physical size and the maximum current the breaker mechanism is designed for.

4 Poles This is a 4-pole breaker (L1, L2, L3, N).

PR113/D Tripping Unit An advanced electronic trip unit with a Digital display (often referred to as DPI - Digital Primary Indicator). This was the high-end unit for the Megamax F series.

L Breaking Capacity "L" stands for the Highest breaking capacity available for this series. For Megamax F, this could be 150 kA at 415V AC.

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 The breaker is bolted directly to the busbars and cannot be withdrawn.

Summary of Specifications

Type: Fixed Mount Air Circuit Breaker (ACB)

Rated Current (Iu): Up to 2000 A (The actual set value is adjusted on the PR113 trip unit)

Poles: 4

Breaking Capacity (Icu): L - Extremely High (up to 150 kA)

Trip Unit: PR113/D - Advanced electronic unit with digital display for current, voltage, power measurements, and detailed fault logging.

Protection Functions: Comprehensive protection including Long-time (L), Short-time (S), Instantaneous (I), and Ground-Fault (G) protection.

Operation: The lack of an "/M" code suggests this might be the standard manual operating mechanism.

Critical Information: Status and Replacement

1. This Product is OBSOLETE.

The ABB SACE Megamax F series has been out of production for many years. It was succeeded by the SACE Emax and later the SACE Emax 2 series.

2. Direct Modern Replacement:

The official and direct replacement for this breaker is the ABB SACE Emax 2 series.

An equivalent modern model would be similar to:

SACE E2.2 L 2000 Ekip G HI LSIG

E2.2: Emax 2, frame size for 2000A.

L: Comparable high breaking capacity.

Ekip G HI: The modern, sophisticated digital trip unit that replaces the PR113. The "HI" version offers a high-resolution display and advanced communication and monitoring features, surpassing the capabilities of the PR113.