ABB S201U-K25 Miniature Circuit Breaker
- 25A
- 1 Pole
- DIN Rail
Quantity
ABB S201U-K25 - 25A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Part of the S200U series, this 25A miniature circuit breaker is built for commercial, industrial, and motor control applications. It delivers robust thermal-magnetic protection for demanding electrical environments. Designed for versatility, the device mounts into standard DIN rail control panels. For modernizations or replacements, this legacy model crosses over to the updated SU201M-K25. Delivering 10kAIC at 240VAC, it features a K-curve trip profile and finger-safe box lug terminals.Specifications
| Brand | ABB |
|---|---|
| Series | S200U |
| Amperage | 25A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | S201 |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | DIN Rail Panels, Control Panels |
| Wire Gauge | 18-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 18 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | K |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Bell Alarm, Shunt Trip, Busbar System |
|---|---|
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | -25C to 55C |
| Construction Features | Current Limiting, Reverse Feed |
Product FAQs
6 answersWhat applications are best suited for the K trip curve on the S201U-K25?
The K curve is designed for circuits with high inrush currents. It provides reliable thermal magnetic protection for inductive loads, motors, and transformers.
Is the ABB S201U-K25 rated for branch circuit protection?
Yes. The S200U series carries a UL 489 rating, making this miniature circuit breaker suitable for branch circuit protection in commercial and industrial control panels.
Is the S201U-K25 a current-limiting circuit breaker?
Yes, the S200U series features a current-limiting design that rapidly interrupts faults and reduces let-through energy to protect downstream equipment.
How is the S201U-K25 breaker mounted?
This breaker snaps directly onto a standard 35mm DIN rail. It includes a quick fastening clip for easy installation and removal without disturbing adjacent components.
What is the recommended tightening torque for the terminals?
The box lug terminals on the S200U series require a tightening torque of 25 in-lbs (2.8 Nm).
Does the S201U-K25 feature touch-safe terminals?
Yes, this breaker is equipped with IP20 finger-safe terminals to protect personnel from accidental contact with live electrical parts during maintenance.
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