Overview
The ABB S202U-K5 is a high-performance miniature circuit breaker from the S200U System pro M compact series. Rated for 5 Amps at 240V AC with a K-curve and 10 kAIC interrupt capacity, this 2-pole breaker delivers reliable branch circuit protection in industrial automation, HVAC, and control panel applications. The unit features clear contact position indication in red/green (real CPI) and a patented twin terminal with captive screws accommodating cables up to 35 mm².
Key Features
- Dual tripping mechanisms: delayed thermal mechanism for overload protection and electromechanic mechanism for short circuit protection
- Finger-proof design (IP20) with busbar slot in the back for visibility during installation
- UL 489 and CSA C 22.2 certified for North American compliance
- 2-pole configuration for single-phase loads and branch circuit applications
- DIN rail mounting for standard panel integration
- K-curve characteristic optimized for inductive loads and motor circuits
Technical Specifications
The S202U-K5 is part of ABB’s comprehensive S200U series offering rated at 240 VAC with 10 kA interrupt capacity. Specifications include thermal-magnetic trip mechanism, screw terminal connections, and standard 18 AWG to 4 AWG wire compatibility.
Typical Applications
- Branch circuit protection in industrial control cabinets
- HVAC and commercial HVAC system protection
- Inductive load circuits (motors, transformers, solenoids)
- Industrial automation equipment and machinery
- Facility electrical distribution panels
- Lighting and general purpose load circuits
Compatibility & Replacements
Compatible With
- Standard 35 mm DIN rail mounting systems
- Industrial control enclosures and distribution panels
- Single-phase 240V AC power distribution systems
- Branch circuit protection requirements per NEC and CEC standards
Replaces / Drop-In Replacement For
The ABB S202U-K5 is a discontinued model. For current replacement options, verify compatibility with your system integrator before ordering, as ABB offers multiple S200U series variants with different ratings and configurations (S202U-K3, S202U-K6, S202U-K8, S202U-K10, etc.).
Works With
- ABB System pro M compact switchgear and distribution boards
- Standard DIN rail-mounted electrical enclosures
- Industrial control systems requiring UL 489 certification
- NEMA/IEC-compliant electrical protection schemes
