We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.

Quality packing for each product

Destination country all taxes & duty to be paid by buyer

Only part of the brand and model, if you have other product needs, please contact us.

ABB S203M-C6 (2CDS273001R0064) Miniature Circuit Breaker

Product Description

1. Key Specifications

2. Core Functions

2.1 Overload Protection

• Thermal Tripping Mechanism: Uses a bimetallic strip that heats up and bends when current exceeds 6A. For mild overloads (e.g., 7A, ~1.2× Iₙ), the strip bends slowly, triggering a trip after a few seconds to minutes (time-delay tripping) — avoiding false trips from temporary inrush currents (e.g., motor startup).
• Adjusted Tripping for C-Curve: Trips at 5–10× Iₙ (30–60A for 6A rating). For example, a 7A overload (1.2× Iₙ) trips in ~10 seconds, while a 12A overload (2× Iₙ) trips in ~1 second — balancing protection and operational flexibility for light industrial loads.

2.2 Short-Circuit Protection

• Electromagnetic Tripping Mechanism: A solenoid coil generates a magnetic field when current spikes above 10× Iₙ (60A). This field pulls a plunger, triggering an instantaneous trip (<0.1 seconds) to minimize arc flash energy and prevent wiring overheating or equipment destruction.
• High Breaking Capacity (10kA): Safely interrupts short-circuit currents up to 10kA at 400V AC — critical for commercial/light industrial systems where short circuits can generate destructive energy (e.g., a 3-phase HVAC unit short-circuiting due to wire insulation failure).

2.3 3-Phase Circuit Protection

• Balanced Protection: Trips if any of the three phases experiences overload or short circuit — preventing "single-phasing" (a common cause of 3-phase motor burnout, where one phase fails, forcing the motor to run on two phases with excessive current).
• Neutral-Free Design: Focuses on phase protection (no neutral pole) — suitable for 3-phase loads that do not require neutral current monitoring (e.g., 3-phase induction motors, 3-phase heaters).

2.4 Manual Control & Status Indication

• Manual ON/OFF Switch: Allows intentional circuit isolation (e.g., during maintenance of a 3-phase power tool). The switch has a clear "ON" (green) and "OFF/TRIPPED" (red) position indicator for quick visual status checks.
• Trip Indication: If the MCB trips due to overload/short circuit, the switch moves to a "mid-position" (between ON and OFF) — distinguishing between intentional shutdown (switch in OFF) and fault-induced trip (switch in mid-position).

3. Core Advantages (vs. Competitors & Other S200M Models)

3.1 Standout Benefits

1. Versatile Application Range
   The C-curve and 6A rating make it suitable for both light industrial (3-phase motors, small HVAC) and commercial (3-phase office equipment) loads — eliminating the need for multiple MCB types.
2. Space-Efficient Panel Design
   A single 3-pole S203M-C6 replaces 3 separate single-pole MCBs (saves 24mm of DIN rail space per circuit), critical for crowded distribution panels in commercial buildings.
3. Reliable Protection for Motors
   Time-delay thermal tripping avoids false trips from motor startup inrush currents (common with B-curve MCBs), while 3-pole design prevents single-phasing — extending motor lifespan.
4. Global Usability
   UL/cULus and CE certifications allow use in North America, Europe, and other regions, simplifying inventory for multinational companies.

4. Typical Applications

4.1 Light Industrial 3-Phase Motor Protection

• Use Case: Protects a 0.75kW 3-phase induction motor (rated current ~1.5A) in a small manufacturing facility.
• Value: The 6A rating provides ample headroom for motor inrush currents (~7.5A, 5× Iₙ), while C-curve tripping avoids false trips. 3-pole design prevents single-phasing if one phase fails.

4.2 Commercial HVAC Systems

• Use Case: Protects a 3-phase window AC unit (2.5kW, rated current ~4A) in an office building.
• Value: 10kA breaking capacity handles short circuits from AC compressor failures; -25°C~+60°C operating range works in unconditioned mechanical rooms.

4.3 3-Phase Power Tool Circuits

• Use Case: Supplies power to a 3-phase angle grinder (1.1kW, rated current ~2.2A) in a workshop.
• Value: Manual ON/OFF switch allows safe tool isolation during maintenance; trip indication quickly identifies overloads (e.g., from grinding too hard).

4.4 Commercial Kitchen Equipment

• Use Case: Protects a 3-phase commercial mixer (1.5kW, rated current ~3A) in a restaurant.
• Value: IP20 protection resists dust from flour/sugar; C-curve tripping accommodates mixer startup inrush (~15A, 2.5× Iₙ) without false trips.

5. Installation & Operation Precautions

1. Circuit Compatibility Check
   • Ensure the circuit voltage is 230/400V AC (3-phase) — do not use in single-phase (230V AC) or high-voltage (>400V AC) systems.
   • Verify the load current does not exceed 6A continuous (e.g., a 3-phase motor with >6A rated current requires a higher Iₙ MCB, such as S203M-C10).
2. DIN Rail Installation
   • Mount on a standard 35mm DIN rail (EN 60715); ensure the rail is secured to the panel (vibration can loosen connections).
   • Leave ≥5mm clearance above/below the MCB for airflow (prevents overheating in high-temperature environments).
3. Wiring Guidelines
   • Use copper conductors rated for ≥6A (e.g., 1.5mm² for 230V AC, 2.5mm² for 400V AC); torque terminal screws to 1.2–1.5N·m (over-tightening strips terminals; under-tightening causes overheating).
   • Connect 3-phase wires (L1, L2, L3) to the "LINE" terminals (top) and load wires to the "LOAD" terminals (bottom) — reverse wiring bypasses protection and causes hazards.
4. Tripping Reset & Troubleshooting
   • After a trip:
     1. Move the switch to "OFF" (red position) to reset the mechanism.
     2. Identify and fix the fault (e.g., replace a shorted motor, reduce overload).
     3. Switch back to "ON" (green position) — do not force the switch if it refuses to reset (indicates unresolved fault).
   • If the MCB trips repeatedly: Check for hidden overloads (e.g., a faulty motor drawing excessive current) or short circuits (e.g., damaged wire insulation).
5. Genuine Replacement Only
   Counterfeit S203M-C6 MCBs lack:
   • Proper thermal/electromagnetic tripping calibration (fail to trip during faults, causing fires).
   • 10kA breaking capacity (explode during short circuits).
   • Safety certifications (non-UL/CE units violate electrical codes).
     Verify authenticity via ABB’s official part number lookup (2CDS273001R0064) and source from ABB-authorized distributors

The structure and details of the product：

Please make an inquiry for more models

ABB RRIA-01

ABB RMIO-01C

ABB AGPS-11

ABB RETA-01

ABB RCNA-01

ABB RPMP-11

ABB RPMP-01-KIT  6.29

ABB RPMP-03-KIT

ABB RPLC-03C

ABB RTAC-01  64379194

ABB RDCO-03C 64606964

ABB RDCO-02C

ABB RDCO-01C 64606913

ABB RCAN-01

ABB RLON-01

ABB RPBA-01

ABB RDIO-01

ABB RMBA-01

ABB NPBA-12

ABB NDNA-02

ABB NCAN-02C

ABB NPLC-02C

ABB NPCU-01

ABB CM-RS.22S

ABB NLWC-02

ABB NTAC-02

ABB NLWC-10

ABB NMBA-01 3BHL000510P0003

ABB TGE5

ABB NIBA-01

ABB NBCI-02OPTION 

ABB RMIO-11C

ABB RRFC6641

ABB RTAC-03

ABB RETA-02

ABB RCHO5620

ABB RINT5611C 6.30

ABB FF200R12KE3

ABB ALS30C1023NP

ABB FF300R12KE3

ABB RBUB5611

ABB RVAR5611

ABB RVAR5612

ABB RRFCU5611

ABB RUSB-02

ABB NCAN-02

ABB RDCU-12C 3AUA0000035410

ABB FS300R12KE3/AGDR-61C

ABB FS450R12KE3/AGDR-61C

ABB RINT5514C

ABB RINT6611C

ABB 3BHE032025R0101 PCD235A101  7.1

ABB AINT-02C 68257867

ABB APOW-01C

ABB AINP-01C

ABB SDCS-POW-4

ABB SDCS-PIN-51

ABB SDCS-PIN-48

ABB SDCS-PIN-205B

ABB SDCS-FEX-2A

ABB SDCS-CON-2

Other best-selling products：