What applications suit a K‑curve breaker?
Inductive loads with moderate inrush, such as motors and transformers in control circuits
1 actual photo shown first. Reference images are model-matched and must be confirmed before purchase.
ABB
S271-K0.5
Miniature Circuit Breaker, 0.5 A, 1‑Pole, K‑Curve, 240/415 VAC
ABB
From $21.62In stockDiscontinued
Product Description
This miniature circuit breaker is designed for precision protection of low-current branch circuits in control panels and industrial equipment. Rated at 0.5 A with a single pole, it supports 240/415 VAC applications and features a K‑curve trip characteristic suitable for inductive loads with moderate inrush currents. The device offers a 6 kA interrupt rating, making it appropriate for installations with moderate prospective short-circuit levels. DIN‑rail mounting and screw terminals enable straightforward integration into standard enclosures and rapid field replacement. Its compact form factor is optimized for panel density while maintaining clearances for wiring and thermal performance. Use it for selective protection of individual loads, instrumentation feeds, or control circuits where tight current limitation and reliable tripping are critical. The breaker aligns with typical miniature breaker dimensions and terminal conventions, supporting quick inspection and maintenance in OEM or retrofit scenarios.
Key Features
- •0.5 A single pole protection
- •K‑curve tripping for inductive loads
- •240/415 VAC operational voltage
- •6 kA interrupting capacity
- •DIN‑rail mount with screw terminals
- •Compact miniature breaker form factor
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
New
Price: $27.38
Availability: 26 in stock
Lead time: ~1 day lead
Never Used
Price: $23.77
Availability: 1 in stock
Lead time: ~8 day lead
Used
Price: $21.62
Availability: 8 in stock
Lead time: ~1 day lead
Specifications
- Type
- Miniature circuit breaker
- Poles
- 1
- Rated current
- 0.5 A
- Trip curve
- K
- Rated voltage
- 240/415 VAC
- Interrupt rating
- 6 kA
- Mounting
- DIN rail
- Terminals
- Screw
- Weight
- 0.24 lb
- Manufacturer part number
- S271-K0.5
- Part #
- S271-K0.5
- Category
- Circuit Breaker
- Subcategory
- Din Rail Mount Circuit Breaker
- Weight
- 0.24 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.
Need S271-K0.5 availability?
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FAQ
Is this breaker DIN‑rail mountable?
Yes, it mounts on standard DIN rails
What is the interrupt rating?
6 kA at the specified voltage levels
What voltage can it operate at?
240/415 VAC depending on system configuration
How is wiring terminated?
Via screw terminals for secure conductor clamping