ABB S203UP-K2 Miniature Circuit Breaker
- 2A
- 3 Pole
- DIN Rail
Quantity
ABB S203UP-K2 - 2A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Ideal for motor and transformer applications, the ABB S203UP-K2 provides precise branch circuit protection. This 3-pole, 2A miniature circuit breaker utilizes a K-curve trip mechanism to safely manage high inrush currents without nuisance tripping. It fastens quickly into standard DIN rail enclosures and control panels. This model is also designed to replace the legacy SU203M-K2. Delivering a 10kA interrupting rating at 480Y/277VAC, this current-limiting breaker includes finger-safe terminals.Specifications
| Brand | ABB |
|---|---|
| Series | S200UP |
| Amperage | 2A |
| Poles | 3 |
| Mounting Style | DIN Rail |
| Voltage | 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 480Y/277VAC |
| Frame Type | S203 |
|---|---|
| Terminal Type | Screw/Clamp Terminal |
| For Use With | DIN Rail Enclosures, 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Bell Alarm, Padlock Attachment, Busbar System, Motor Operator, Terminal Shields |
|---|---|
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, UL, VDE |
| Temp Rating | -25C to 55C |
| Construction Features | Current Limiting, Reverse Feed, Common Trip |
Product FAQs
6 answersIs the ABB S203UP-K2 suitable for branch circuit protection?
Yes, the S200UP series is UL 489 listed, making it approved for branch circuit protection in industrial and commercial control panels.
What does the K trip curve signify on the S203UP-K2?
The K trip curve is designed for loads with high inrush currents, such as motors and transformers. It allows the breaker to ride through momentary current spikes without nuisance tripping while still providing rapid short-circuit protection.
What is the direct replacement for the S203UP-K2?
ABB has transitioned the legacy S200UP series to the updated SU200M series. The direct replacement for this specific breaker is catalog number SU203M-K2.
Can power be fed from either direction on this breaker?
Yes, ABB S200UP series miniature circuit breakers are suitable for reverse feed applications, allowing power to be supplied to either the top or bottom terminals.
Are the terminals on the S203UP-K2 touch-safe?
Yes, the breaker features IP20 rated, finger-safe terminals to protect installers and maintenance personnel from accidental contact with live electrical components.
Can this breaker be used with an ABB busbar system?
Yes, the S200UP series features multi-function terminals designed to accept both standard wire conductors and dedicated ABB busbars for streamlined panel wiring.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.