Overview
The ABB S202U-K8 is a high-performance miniature circuit breaker designed for branch circuit protection in industrial control systems, automation equipment, and commercial electrical distributions. This 2-pole unit operates at 240 VAC with an 8-ampere current rating and features a K-curve trip characteristic ideal for circuits with moderate inrush loads. With a 10 kA interrupt rating and standard thermal-magnetic trip mechanism, the S202U-K8 delivers reliable protection in DIN rail-mounted enclosures.
Key Features
- 2-Pole Configuration: Protects two independent circuits in a single compact unit
- K-Curve Trip Characteristic: Designed for circuits with moderate inrush currents, such as motor loads and transformer-fed equipment
- 10 kA Interrupt Rating: Standard interrupting capacity for branch circuit applications
- DIN Rail Mount: Quick, tool-free installation on standard 35 mm DIN rail
- Thermal-Magnetic Trip: Dual protection against overload (thermal) and short-circuit (magnetic) conditions
- Toggle Actuator: Manual on/off control with clear trip indication
Technical Specifications
Electrical:
Voltage Rating: 240 VAC
Current Rating: 8 A
Frequency: 50/60 Hz
Interrupt Rating: 10 kA @ 240 VAC
Trip Characteristic: K-Curve (Thermal-Magnetic)
Number of Poles: 2
Overload Setting Range: 1.05 to 1.2 A
Short-Circuit Trip: 8 to 12 A
Physical & Installation:
Mounting Type: DIN Rail (35 mm)
Dimensions: 71 mm L × 35 mm W × 92 mm H
Termination: Screw Terminal (18 to 4 AWG wire)
Actuator: Toggle Switch
Enclosure Rating: IP20
Environmental & Regulatory:
Operating Temperature: −25 to +55 °C
Standards: UL 489, CSA 22.2 No. 5, IEC 60947-2
Series: S200U (System pro M compact® Family)
Typical Applications
- Industrial control panel protection
- Automation equipment distribution
- Motor control circuits with moderate inrush loads
- Transformer-fed distribution systems
- PLC and servo motor circuit protection
- General-purpose branch circuit protection
Compatibility & Replacements
Compatible With
- Standard 35 mm DIN rail enclosure systems
- All DIN rail-mount control panels and distribution boards
- Industrial control systems with 240 VAC supply
- Automation and PLC-based systems
Replaces / Drop-In Replacement For
The ABB S202U-K8 is the 2-pole variant of the S200U series. Similar single-pole units include the S201U-K8 and S203U-K8 (3-pole). Verify compatibility with your system integrator before ordering for any direct replacement applications.
Works With
- ABB System pro M compact® control systems
- Industry-standard DIN rail mounting systems
- 24 VDC auxiliary contact modules (if required)
- Remote signaling and communication modules for smart distribution
