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Miniature Circuit Breakers
  • S101 Screw Circuit Breaker Automatic Fuse MCB Fuse
  • S101 Screw Circuit Breaker Automatic Fuse MCB Fuse
  • S101 Screw Circuit Breaker Automatic Fuse MCB Fuse
  • S101 Screw Circuit Breaker Automatic Fuse MCB Fuse
  • S101 Screw Circuit Breaker Automatic Fuse MCB Fuse
  • S101 Screw Circuit Breaker Automatic Fuse MCB Fuse
S101 Screw Circuit Breaker Automatic Fuse MCB Fuse

S101 Screw Circuit Breaker Automatic Fuse MCB Fuse

$0.10-$0.60/ Piece|100 Piece/Pieces(Min. Order)
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S101 Screw Circuit Breaker Automatic Fuse MCB Fuse

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Automatic Overcurrent Protection: Designed to automatically interrupt electrical circuits during overloads or short circuits, safeguarding systems up to 32A rated current.
  • High Breaking Capacity: Built with copper conductors and robust plastic casing to handle high fault currents, ensuring reliable circuit interruption in demanding conditions.

Key features

  • 1. Material Technology

    • With copper conductors and durable plastic housing, ensure efficient current flow and long-lasting performance compared to aluminum-based models*.

  • 2. Performance Parameters

    • With a high breaking capacity of 6kA, protect circuits against surges exceeding standard MCBs' capabilities*.

  • 3. Scenario Solutions

    • With voltage ratings of 250V and 380V, adapt seamlessly to both residential and industrial applications*.

  • 4. Certification Standards

    • Certified to CB, CE, and RoHS standards, ensuring global safety compliance and eco-friendly materials*.

  • 5. Interactive Design

    • With a screw-type mounting mechanism, achieve secure installation and easy maintenance compared to snap-fit designs*.

Product details

S101 Screw Circuit Breaker Automatic Fuse MCB Fuse

The S101 Screw Circuit Breaker Automatic Fuse MCB Fuse is a high-performance miniature circuit breaker (MCB) designed for reliable overcurrent protection in electrical systems. Engineered with copper conductors and durable plastic/ ceramic construction, it combines robustness with efficiency. Certified to global standards (CB, CE, RoHS), it ensures safety and compliance across residential, commercial, and industrial applications.

Technical specifications

FeatureSpecificationApplication Scenario
Breaking Capacity5kA (high standard)Protecting circuits in industrial machinery
MaterialCopper (conductor), Plastic/Ceramic (body)Ensuring thermal stability and conductivity
Number of Poles1PSingle-phase residential/commercial circuits
Rated Current32APower distribution in lighting and appliance circuits
Voltage Rating250V/380V ACCompatibility with standard and high-voltage systems
CertificationsCB, CE, RoHSGlobal compliance for safety and environmental standards

Customization guide

Adjustable parameters include:

  • Breaking Capacity: Upgradable to 6.5kA for high-energy industrial applications.
  • Voltage Rating: Customizable to 440V for specialized systems.
  • Pole Configuration: Expandable to 2P/3P for multi-phase requirements.

Get inspired

The S101 MCB fuse’s robust design and certifications make it ideal for safeguarding critical electrical infrastructure. Its 32A rating and 250V/380V compatibility ensure versatility, while copper conductors optimize energy efficiency in demanding environments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Breaking Capacity5kA+15% (5.75kA)+30% (6.5kA)*
Operating Temp Range-25°C to 70°C-30°C to 80°C-40°C to 90°C
Response Time0.1s0.085s0.07s

Supplier's note

  1. Technical Breakthroughs:

    • Breaking Capacity: The 5kA baseline (20% higher than industry standards) ensures superior fault protection.
    • Copper Conductors: Reduces energy loss by 15% compared to aluminum alternatives.
    • Global Certifications: Simplifies compliance for international deployments.

  2. Version Selection Guide:

    • Base Model: Ideal for residential and small commercial setups (e.g., home appliances, lighting).
    • Advanced Model: Suited for medium-scale industrial equipment (e.g., HVAC systems, motors).
    • Pro Model: Designed for high-risk environments (e.g., data centers, heavy machinery) where extreme surge currents and temperature fluctuations are common.

With its 6.5kA breaking capacity, the Pro Model can handle surges triple the Base Model’s threshold, ensuring uninterrupted operation in critical systems. Pair this with its wide temperature range, and you achieve unmatched reliability in harsh climates.

Frequently asked questions

  • Which MCB fuse is suitable for residential circuits with 250V voltage?

  • How to install the S101 MCB fuse correctly for polarity-sensitive circuits?

  • Why is copper used in the S101 MCB fuse compared to other materials?

  • Can the S101 MCB be customized for 380V industrial applications?

  • Is the S101 MCB compliant with international safety standards?

  • What makes the S101 suitable for high-current applications like machinery?

  • How does the 32A rated current of the S101 affect circuit safety?

  • Why choose a single-pole S101 MCB over multi-pole breakers?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Miniature Circuit Breaker (MCB)Residential/commercial lighting, small appliancesBreaking capacity: 10kA (IEC 60947-2)
Rated current: 32A (IEC 60947-2)
Material: Copper contacts (ASTM B117 corrosion test)		▲ Resettable design
Compact size for tight spaces
Cost-effective for low-current circuits		Limited to ≤63A circuits
Manual reset required after tripping
Less robust for high-impact surges
FuseLow-cost applications, older systemsBreaking capacity: 5kA (IEC 60127)
Voltage rating: 250V (IEC 60127)
Material: Ceramic body (ASTM C62)		Inexpensive
Guaranteed isolation after activation
RoHS-compliant		One-time use only
No reset capability
Slower response to overloads
Residual Current Device (RCD)Bathrooms, wet areas, industrial equipmentTrip current: 30mA (IEC 61009)
Response time: <30ms (IEC 61009)		▲ Life-saving shock protection
Mandatory for safety in moist environments		Requires proper grounding
Higher cost
Potential nuisance tripping in noisy circuits
Molded Case Circuit Breaker (MCCB)Industrial machinery, high-current circuitsBreaking capacity: 50kA (IEC 60947-2)
Adjustable trip settings: 100–630A		▲ Handles high currents
Customizable for diverse applications		Bulky installation
Complex wiring
Higher price point
Surge Protective Device (SPD)Electronics protection, server roomsSurge current rating: 100kA (IEC 61643-1)
Clamping voltage: 1.5kV (IEC 61643-1)		▲ Blocks voltage spikes
Protects sensitive equipment		Requires regular testing
Passive degradation without visible signs
Thermal Circuit BreakerMotors, appliances, HVAC systemsThermal sensitivity: 110% rated current (IEC 60947-3)
Material: Plastic housing (UL 94 V-0 flame retardant)		Simple, no-moving-parts design
Reliable for thermal overload		Slower response time
Less precise current detection compared to electronic MCB

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