ABB Circuit Breaker - S200 - 1P+N - 2A B-Curve - 6kA
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Product Information
Full details
This guide is for electricians and DIY enthusiasts requiring reliable overcurrent protection. The ABB 2CDS251103R0025 offers compact, 6kA breaking capacity for AC/DC circuits in a 2-module width, ensuring safety and compliance. A key caveat is its specific B-curve characteristic, which dictates its application suitability.
All features
| Series | S200 |
|---|---|
| Model Part Number | 2CDS251103R0025 |
| Brand | ABB |
Extended Product Information
FAQs
What does the 'B' in B-curve mean?
The 'B' curve indicates the tripping characteristic. A B-curve breaker trips between 3 to 5 times the nominal current. It's typically used for lighting circuits, socket outlets, and protection of electronic equipment with low inrush currents.
What is the breaking capacity of this circuit breaker?
This circuit breaker has a breaking capacity of 6kA (kiloamperes), meaning it can safely interrupt fault currents up to 6000 amperes according to EN 60898 standards.
Can this circuit breaker be used for DC circuits?
Yes, this circuit breaker is suitable for DC applications as well as AC applications, provided the voltage rating for DC is not exceeded.
What is the nominal current rating of this breaker?
The nominal current rating for this specific model (S201-B2NA) is 2 Amperes (2A).
How do I determine if this breaker is the right choice for my application?
Consider the type of load, its expected inrush current, and the overall circuit protection requirements. For loads with low inrush current (like lighting or electronics), the B-curve is suitable. For loads with moderate inrush current (like small motors), a C-curve might be better. Always consult electrical codes and a qualified electrician if unsure.
What does '1P + NA' signify?
'1P + NA' means the circuit breaker protects one pole (phase) plus the neutral conductor. It's a single-pole breaker with integrated neutral switching.
How wide is this circuit breaker?
This circuit breaker is 2 modules wide, referring to the standard width of electrical components used on DIN rails.
Troubleshooting
Circuit breaker trips immediately upon reset
This indicates a short circuit in the connected load or wiring. Disconnect the load and check wiring for faults. If the breaker trips with no load connected, the breaker itself may be faulty.
Circuit breaker does not trip when a fault occurs
Ensure the breaker is correctly rated for the circuit. Test the breaker's trip function manually. If it fails to trip during a tested fault, replace the breaker immediately.
Overheating at connections
Ensure all terminal connections are tightened to the correct torque specification. Loose connections can cause resistance and heat buildup. Check for damaged wiring.
Inconsistent tripping (nuisance tripping)
Verify the load characteristics. The B-curve might be too sensitive for the connected equipment's inrush current. Consider if a C or D curve breaker is more appropriate, or if the load itself is causing intermittent issues.
Pros and Cons
Pros
- Compact and space-saving design.
- High breaking capacity (6kA) for safety.
- Versatile for AC and DC applications.
- B-curve characteristic suitable for specific load types.
- Easy DIN rail installation.
Cons
- B-curve is not suitable for all applications (e.g., high inrush current loads).
- Requires proper understanding of electrical codes for safe installation.
- No built-in surge protection; external devices may be needed.
- Specific model is for 2A nominal current; higher ratings require different models.
Setup, Compatibility & Care
Setup:
- Ensure the main power supply is switched OFF.
- Mount the circuit breaker onto a standard 35mm DIN rail using the integrated clip.
- Connect the line conductor to the designated input terminal (usually marked 'L' or top).
- Connect the neutral conductor to the neutral terminal (usually marked 'N' or bottom, or in a separate neutral block).
- Connect the load wires to the output terminals.
- Ensure all connections are secure and torqued to the manufacturer's specifications.
- Re-energize the main supply and test the circuit breaker functionality.
Compatibility:
- Compatible with ABB S200 series auxiliary devices (e.g., signal contacts, remote switching).
- Suitable for use with standard electrical wiring and distribution boards that support DIN rail mounting.
- Designed for AC circuits and DC circuits within specified voltage limits.
Care:
- Keep the circuit breaker clean and free from dust and debris. Wipe with a dry or slightly damp cloth if necessary. Avoid harsh chemicals.
- Regularly inspect wiring connections for tightness and signs of corrosion or overheating.
- Periodically test the circuit breaker's trip function according to local electrical codes and standards.