What is the rated current of the S281-K4?
4 amperes
1 actual photo shown first. Reference images are model-matched and must be confirmed before purchase.
ABB
S281-K4
S281-K4 Circuit Breaker, 1‑Pole, 4 A, K‑curve, DIN‑rail
ABB
From $8.98In stock
Product Description
The S281-K4 is a compact DIN-rail mount miniature circuit breaker designed for industrial control panels requiring precise overcurrent protection with K-curve trip characteristics. Rated at 4 A, this single-pole device supports operation on 277/400 VAC systems with a 10 kA interrupt rating, making it suitable for high inrush loads such as motors and transformers while maintaining fast short-circuit response. Its form factor integrates easily into standardized DIN enclosures, offering straightforward installation and replacement in multi-circuit assemblies. The K-curve profile provides enhanced tolerance to transient surges without nuisance tripping, reducing downtime in demanding environments. This breaker is intended for use by qualified personnel in accordance with applicable electrical codes and coordination studies. Package contents typically include the breaker only; accessories such as auxiliary contacts or busbars are sold separately. Use where compact protection, reliable coordination, and DIN-rail compatibility are required.
Key Features
- •DIN-rail mount miniature circuit breaker
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
New
Price: $11.22
Availability: 18 in stock
Lead time: ~1 day lead
Never Used
Price: $10.1
Availability: 11 in stock
Lead time: ~1 day lead
Used
Price: $8.98
Availability: 16 in stock
Lead time: ~1 day lead
Specifications
- Manufacturer Part Number
- S281-K4
- Poles
- 1 pole
- Rated Current
- 4 A
- Trip Curve
- K curve
- Rated Voltage
- 277/400 VAC
- Interrupt Rating
- 10 kA
- Mounting
- DIN rail
- Weight
- 0.26 lb
- Category
- Circuit Breaker
- Subcategory
- Din Rail Mount Circuit Breaker
- Part #
- S281-K4
- Category
- Circuit Breaker
- Category
- Din Rail Mount Circuit Breaker
- Weight
- 0.26 lbs
Before we quote this part
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Independent sourcing disclaimer
We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.
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FAQ
Is the S281-K4 single pole or multi-pole?
It is a 1‑pole breaker
What trip characteristic does it use?
K‑curve, suitable for high inrush loads
What voltage systems is it compatible with?
277/400 VAC applications
What is the interrupt rating?
10 kA at the specified voltage ratings