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Miniature Circuit Breakers
  • 1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch
  • 1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch
  • 1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch
  • 1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch
  • 1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch
  • 1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch
1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch

1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch

  • >= 5 Pieces
    $2.49
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1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • DC Circuit Protection: Designed to safeguard DC circuits (250V) against overcurrents and short circuits with a C-curve rating, ideal for varying load conditions in solar power systems, battery storage, and electric vehicle applications.
  • High Breaking Capacity: Equipped with a 10kA breaking capacity to handle extreme short-circuit currents, ensuring reliable protection for critical systems.

Key features

  • 1. Durable Plastic Construction for Lightweight Installation

    • With a lightweight plastic body, achieve easy installation and reduced labor costs compared to heavier metal alternatives*.

  • 2. Illuminated Switch Design for Clear Visual Confirmation

    • With an illuminated green ON/OFF switch, effortlessly monitor circuit status at a glance, unlike non-illuminated models*.

  • 3. 6kA Breaking Capacity for High-Current Protection

    • With a 6kA breaking capacity, safely handle extreme short-circuit currents, outperforming lower-rated breakers in critical scenarios*.

  • 4. DC Circuit Specialization for Solar/EV Systems

    • Designed for DC circuits (250V, 1P), ensure compatibility with solar panels and electric vehicles where AC breakers fall short*.

  • 5. IEC/EN60947-2 & GB14048.2 Compliance for Global Safety Standards

    • Certified to international safety standards, guaranteeing reliability and safety compared to non-compliant products*.

Product details

1P 125A DC MCB 250V Circuit Breaker for PV System C Curve Battery Main Switch

The TOMZN TOB1Z series DC miniature circuit breakers (MCBs) are designed for reliable protection in DC circuits up to 250V. Available in 1P configurations with rated currents of 80A, 100A, and 125A, these breakers ensure safety in solar power systems, EV charging stations, and other low-voltage applications. Their compact, modular design simplifies integration into electrical panels, while IEC/EN60947-2 and GB14048.2 compliance guarantees international safety standards.

Technical specifications

FeatureSpecificationApplication Scenario
Rated Current80A, 100A, 125AMatches load requirements in PV systems or EVs
Breaking Capacity6kASafeguards against short-circuit currents
Voltage Rating250V DCEnsures compatibility with standard DC systems
Pole Configuration1PSimplifies wiring in single-phase circuits
Curve TypeC CurveProtects against overloads in continuous loads
MaterialDurable plastic housingLightweight installation in residential/commercial spaces
ComplianceIEC/EN60947-2, GB14048.2Meets global safety and performance standards

Customization guide

Adjustable rated current (80A–125A) ensures compatibility with specific load requirements. The modular design allows seamless integration into existing electrical systems, while the standardized interface simplifies maintenance and part replacement.

Get inspired

With a 6kA breaking capacity, these breakers provide robust protection against short circuits in solar inverters or battery banks. The C Curve ensures precise overload detection without nuisance tripping, making them ideal for continuous DC power applications.

Choose your model

Parameter80A Model (Base)100A Model (Advanced)125A Model (Pro)
Rated Current80A+25% (100A)+56% (125A)*
Breaking Capacity6kA6kA6kA
Application CrowdResidential PVSmall commercialIndustrial systems

Supplier's note

  1. Technical Breakthroughs:

    • 6kA Breaking Capacity: Exceeds industry benchmarks for DC circuit protection.
    • C Curve Precision: Reduces downtime by minimizing false tripping in stable loads.
    • IEC/EN60947-2 Compliance: Ensures seamless adoption in global markets.

  2. Version Selection Guide:

    • Base (80A): Ideal for residential solar setups or small EV charging stations.
    • Advanced (100A): Suitable for commercial solar arrays or light industrial equipment.
    • Pro (125A): Designed for high-demand systems like battery storage grids or EV fast-charging infrastructure.

With the Pro Model’s 125A rating, you can handle larger battery banks while maintaining the same 6kA safety threshold as smaller models. Pair this with the C Curve’s overload tolerance to ensure uninterrupted power flow in critical applications.

Frequently asked questions

  • Which TOMZN DC circuit breaker suits small solar installations (100A vs 125A)?

  • How do I maintain TOMZN DC circuit breakers for long-term use?

  • Why choose plastic DC circuit breakers for solar systems?

  • Can I customize TOMZN DC breakers for specific PV systems?

  • Are TOMZN DC breakers IEC/EN60947-2 certified?

  • Are these suitable for off-grid solar setups?

  • What does the C-curve rating mean for these breakers?

  • What’s the breaking capacity of TOMZN TOB1Z models?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Breaking CapacityIndustrial DC systems with high short-circuit risksIndustry: 6kA (IEC 60947-2)Our Base/Advanced: 10kA (▲▲▲ vs Industry)Superior surge handling (▲▲▲) for robust protection
Rated CurrentHigh-power DC applications (EV charging, solar farms)Industry: 80AOur Base: 100A (▲▲ vs Industry)Our Advanced: 125A (▲▲▲ vs Industry)
Voltage RatingStandard DC systems (batteries, solar panels)Industry/Our: 250V DC (IEC 60947-2 compliant)Matches industry standard for universal compatibilityNo advantage/disadvantage here
Overcurrent Protection CurveResidential/commercial DC circuitsIndustry: C/D curvesOur: C curve (ISO 7637-2 certified)Optimized for sensitive DC loads
Material & WeightSpace-constrained installationsIndustry: Metal (2.5 kg)Our: ABS plastic (1.2 kg) (▲▲ lighter)1.2 kg (▲▲) for easier installation
Modular CompatibilityExpandable DC systemsIndustry: Proprietary designsOur: Standard DIN rail (▲▲▲ IEC 60884-21)Easy integration (▲▲▲) with TOMZN components

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