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DC Circuit Breaker 1P 250V | KYDB-63-1P
Kuangya KYDB-63-1P is a dc circuit breaker 1p 250v, rated 10–63A.
Provides short-circuit and overload protection, breaking capacity 6kA/10kA.
Compact 18mm width per pole, IEC 60947-2 compliant, DIN-rail mount.
Overview
The dc circuit breaker 1p 250v (model KYDB-63-1P) is a single-pole miniature breaker designed for PV combiner boxes, ESS systems, and telecom DC power. It supports rated currents from 6A to 63A and ensures dependable overload and short-circuit protection at 250VDC. With Ui 690V and Uimp 6kV, this breaker delivers safety and reliability in demanding DC applications.
Key Features
- Rated current options: 6A / 10A / 16A / 20A / 25A / 32A / 63A
- Rated voltage: 250VDC (1P); frame current 63A
- Breaking capacity: 6kA (Icn) / Operating short-circuit capacity: 6kA (Ics)
- Trip characteristics: C / D, thermal-magnetic
- Rated insulation voltage (Ui): 690V; Impulse withstand voltage (Uimp): 6kV
- Mechanical life: 20,000 ops; Electrical life: 2,000 ops
- Certified to IEC 60947-2, CE, and UL
- Perfect match with PV combiner boxes, DC fuses, DC SPDs, and DC switch disconnectors
Specifications
| Model | KYDB-63-1P |
|---|---|
| Poles | 1P |
| Rated Current (In) | 6–63A |
| Rated Voltage (Ue) | 250VDC |
| Rated Insulation Voltage (Ui) | 690V |
| Impulse Withstand Voltage (Uimp) | 6kV |
| Breaking Capacity (Icn/Ics) | 6kA / 6kA |
| Trip Characteristics | C / D |
| Mechanical Life | 20,000 operations |
| Electrical Life | 2,000 operations |
| Installation | DIN-rail, width 18mm per pole |
| Standards | IEC 60947-2, GB/T 14048.2 |
Wiring Diagram & Dimensions
Applications
- Residential and commercial PV rooftop systems
- Energy storage system (ESS) DC distribution
- Telecom and data center DC power supply
- Industrial automation DC panels
FAQ
Q1: What is a dc circuit breaker 1p 250v?
A1: It is a single-pole miniature DC breaker rated at 250VDC, designed for overload and short-circuit protection in PV, ESS, and telecom applications.
Q2: What current ratings are available for KYDB-63-1P?
A2: It supports 6A, 10A, 16A, 20A, 25A, 32A, and 63A.
Q3: What is the breaking capacity?
A3: The breaker provides 6kA breaking capacity (Icn/Ics).
Q4: Is it suitable for PV combiner boxes?
A4: Yes, this dc circuit breaker 1p 250v is commonly used in PV combiner boxes and ESS DC systems.
Q5: What standards does KYDB-63-1P comply with?
A5: It complies with IEC 60947-2, GB/T 14048.2, CE, and UL certifications.
Get a Quote
Contact Kuangya for datasheets, wiring diagrams, or OEM customization of KYDB-63-1P.
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