Abb su203m-k60 Miniature Circuit Breaker 60A 3P K-curve

Product Description

The ABB su203m-k60 is a 3-pole miniature circuit breaker rated at 60 amps and 400 volts AC, designed for overcurrent and short-circuit protection in commercial and industrial electrical distribution systems. It features a K-type tripping characteristic, making it suited for loads with moderate inrush currents such as transformers and mixed resistive-inductive loads. The breaker carries a UL489 listing with a 10 kA interrupting rating under UL standards and a 15 kA interrupting rating under IEC standards, giving installers flexibility across North American and international panel configurations. Licensed electricians are the primary installers of this device.

The su203m-k60 is applied in 3-phase electrical distribution panels in commercial buildings, light industrial facilities, and equipment control enclosures where branch-circuit protection is required. The K-curve characteristic distinguishes it from standard B- or C-curve breakers, targeting circuits where brief high-magnitude inrush currents must be tolerated without nuisance tripping. It fits within the ABB SU200M series breaker family and is suitable for both UL and IEC-governed installations depending on the panel listing requirements of the project.

Key Features

• K-type tripping curve for inrush-tolerant overcurrent protection
• 60 amp continuous current rating
• 3-pole configuration for 3-phase branch-circuit protection
• 10 kA interrupting capacity per UL489
• 15 kA interrupting capacity per IEC standards
• 400 volt AC rated for international and dual-standard panel applications

Compatibility

Designed as an OEM-specified replacement or new-installation breaker within the ABB SU200M series miniature circuit breaker platform, compatible with panel assemblies requiring UL489-listed 3-pole branch-circuit protection.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize the panelboard completely before handling or installing the breaker. Verify that the panel busbar rating, wire gauge, and terminal torque specifications conform to the panel manufacturer's documentation and NEC Article 240 requirements. Do not install in a panel with a busbar voltage or fault-current rating that exceeds the breaker's listed ratings.