125A DC Circuit Breaker 1000V 6kA Overcurrent Isolation

Name: 125A DC Circuit Breaker 6kA 1000V - ETEK Electri
SKU: EKM1-125DC

Safeguards heavy-duty photovoltaic structures with the 125A DC Circuit Breaker, delivering precise 1000VDC thermo-magnetic protection. The EKM1-125DC DC Mini Circuit Breaker handles 80-125A continuous direct currents to secure demanding energy storage systems against catastrophic overloads.

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ModelEKM1-125DC

CategoryDC Mini Circuit Breaker, Circuit Breakers

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Structural Features of the 125A DC Circuit Breaker

Engineered to rapidly interrupt high-voltage direct current faults, this 125A DC Circuit Breaker ensures absolute polarity disconnection for large-scale solar architectures.

Voltage Scalability: Operates safely across 250VDC (1P), 500VDC (2P), and 1000VDC (4P) configurations to match specific 125a dc breaker requirements.
High-Capacity Interruption: Clears severe fault currents up to 6kA (Icn), shielding energy storage battery banks from destructive overloads.
Advanced Tripping Mechanisms: Incorporates a default 8-12In instantaneous trip, with optional Z, L, and K curves to manage unique 125 amp dc circuit breaker inrush profiles.
Visual Status Indication: Features an integrated green (OFF) and red (ON) contact position window for immediate maintenance verification inside the panel.

Field Applications for DC Distribution

Deploying this robust 125A DC Circuit Breaker minimizes critical downtime across specialized commercial direct current networks.

Photovoltaic Arrays: Isolates solar string lines effectively, functioning as a mandatory main disconnect for commercial solar farms.
Energy Storage Systems (ESS): Secures large-scale battery banks against destructive overcurrents during repetitive charging cycles using this 125 amp dc breaker.
Direct Current Panels: Provides central circuit isolation and dependable dc breaker 125 amp performance for high-load automated control panels.

Technical Specifications with the 125A DC Circuit Breaker

Evaluate the comprehensive electrical parameters below to ensure this 125A DC Circuit Breaker aligns precisely with your B2B switchgear calculations and cable sizing up to 35mm².

Certifications & Standards

The EKM1-125DC adheres strictly to IEC/EN 60947-2 regulations for low-voltage controlgear, operating reliably in ambient temperatures from -5°C to +40°C with up to 95% maximum non-condensing humidity.

Technical Data

General Data
Standard	IEC/EN 60947-2
Protection	Overcurrent and short circuit
Type of trip	Thermo-magnetic
No. of poles	1P, 2P, 4P
Rated voltage (Ue)	250VDC (1P), 500VDC (2P), 1000VDC (4P)
Insulation voltage	500V
Rated currents (In)	80, 100, 125A
Rated short-circuit capacity (Icn)	6kA
Rated impulse withstand voltage (Uimp)	4kV (1.2/50µs)
Dielectric test voltage	3kV (50/60Hz, 1 min.)
Mechanical Data & Installation
Electrical life	4,000 Cycles
Mechanical life	10,000 Cycles
Contact position indicator	Green OFF / Red ON
Protection degree	IP20
Ambient temperature	-5°C to +40°C (Max. 95% humidity)
Terminal connection type	Cable
Max. terminal size for cable	35mm²
Max. tightening torque	2.5 N.m
Installation	Mounting on 35mm DIN rail
Incoming method	According to the wiring diagram (Polarity specific)

Tripping Characteristic:

Tripping Curve	Thermal Tripping Characteristics	Instantaneous Tripping Characteristics
Default Curve	1.05In: no tripping within 2h 1.30In: tripping within 2h	8In – 12In
Z Curve (Optional)	1.05In: no tripping within 2h 1.30In: tripping within 2h	3In – 5In
L Curve (Optional)	1.05In: no tripping within 2h 1.30In: tripping within 2h	6In – 10In
K Curve (Optional)	1.05In: no tripping within 2h 1.30In: tripping within 2h	10In – 14In

Temperature Derating Table:

In (A)	-40°C	-30°C	-20°C	-10°C	0°C	10°C	20°C	30°C	40°C	50°C	60°C	70°C
80	106.4	103.2	100.0	96.0	92.0	88.8	84.0	80.0	75.2	70.4	65.6	60.0
100	133.0	129.0	125.0	120.0	115.0	111.0	105.0	100.0	94.0	88.0	82.0	75.0
125	166.3	161.3	156.3	150.0	143.8	138.8	131.3	125.0	117.5	110.0	102.5	93.8

Dimensions and Wiring of the 125A DC Circuit Breaker

Verify exact enclosure compatibility for the 125A DC Circuit Breaker by referencing the standardized 35mm DIN rail mounting footprints and polarity-specific incoming methods illustrated below.