ABB E3N 3200 PR121/P-LI In 3200A 3p F HR 3P Fixed Air Circuit Breaker Rear Horizontal

The ABB E3N 3200 PR121/P-LI In=3200A 3P F HR is a fixed three-pole air circuit breaker for low-voltage power distribution systems with a rated current of 3200 A.

This configuration uses rear horizontal terminals, making it suitable for switchboard layouts where busbar connections are routed from the rear of the breaker. The PR121/P-LI electronic trip unit provides long-time overload protection and instantaneous short-circuit protection for feeder, incomer, and distribution applications.

Unlike a molded-case circuit breaker, this E3N air circuit breaker is intended for higher-current switchgear assemblies where maintainability, coordination, and breaker status monitoring are important. The supplied auxiliary contacts and open-closed position indication support integration with panel control and monitoring circuits.

This page should describe only the fixed 3P rear-horizontal version with PR121/P-LI protection. Do not mix it with withdrawable versions, four-pole versions, PR122 or PR123 trip units, or E3H and E3S variants.

Key Features

3200 A rated current

Three-pole fixed air circuit breaker

Rear horizontal terminal arrangement

PR121/P-LI electronic trip unit

Long-time overload protection

Instantaneous short-circuit protection

690 VAC rated operational voltage

1000 VAC rated insulation voltage

12 kV impulse withstand voltage

65 kA breaking capacity

Four auxiliary contacts included

Open and closed breaker position indication

Typical Applications

Main incomer panels

Large feeder circuits

Low-voltage switchboards

Industrial distribution boards

Motor control center incomers

Commercial building power systems

Generator distribution panels

Plant electrical infrastructure

Installation Notes

Install the breaker in a compatible low-voltage switchboard using the correct fixed-frame mounting arrangement.

Confirm the rear horizontal busbar layout, phase spacing, rated current requirement, and PR121/P-LI protection settings before replacement.

The protection settings must be coordinated with the upstream and downstream protective devices by a qualified electrical engineer.

Do not describe this model as a molded-case breaker, a withdrawable breaker, or a four-pole breaker.

FAQ

Q

Is this a fixed or withdrawable breaker

A

It is a fixed air circuit breaker

Q

How many poles does this breaker have

A

It has three poles

Q

What does PR121/P-LI mean

A

It is an electronic trip unit with long-time overload protection and instantaneous short-circuit protection

Q

What is the rated current

A

The rated current is 3200 A

Q

What does HR mean

A

HR indicates rear horizontal terminals