Product Description: 2CDS200936R0001 S2C-H11L

1. Product Series: S200 Series
2. Model: S201M-B2

3. The S201M-B2 is a 2-pole miniature circuit breaker designed for the protection of electrical circuits against overloads and short circuits. It combines high breaking capacity with compact dimensions, making it ideal for a wide variety of low-voltage protection applications.

4. Type: Miniature Circuit Breaker (MCB)
5. Catalog Number: 2CDS271001R0025

Technical Parameters: 2CDS200936R0001 S2C-H11L

• Model

  S201M-B2

  Catalog Number

  2CDS271001R0025

  Type	Miniature Circuit Breaker (MCB)

  Number of Poles

  2 (Double pole)

  Rated Current

  2 A (Amperes)

  Rated Voltage

  230/400 V AC

  Tripping Curve

  B-curve

  Breaking Capacity

  6 kA (at 230/400 V AC)

  Thermal Protection

  Yes (For overload protection)

  Magnetic Protection

  Yes (For short-circuit protection)

  Mounting Type

  DIN Rail (35mm)

  Dimensions (W x H x D)

  36 x 80 x 70 mm (approx.)

  Operating Temperature

  -25°C to +60°C

  Weight

  Approx. 0.2 kg

Applications: 2CDS200936R0001 S2C-H11L

1. Residential Electrical Installations:

   • Protection of lighting circuits, socket outlets, and small appliances.
   • Protection for household circuits, preventing damage from short circuits or overloading.

2. Commercial Applications:

   • Used in distribution boards in small offices, shops, or other commercial environments to protect circuits supplying lighting, HVAC systems, or other non-industrial equipment.

3. Industrial Applications:

   • Protection for light machinery and small industrial loads that require circuit protection.
   • Often used in distribution boards or control panels where space-saving and reliability are key factors.

4. Motor Protection:

   • Suitable for small motors or equipment that may be subject to occasional overloads, such as fans, pumps, and other light-duty industrial machinery.

5. Distribution Boards:

   • Widely used in residential and commercial distribution panels to protect individual circuits from overloads and short circuits.

6. Electrical Subsystems:

   • It is also used in solar power systems for protecting individual strings or inverter connections against overcurrent.

Advantages of the ABB S201M-B2

• Compact Size: The S201M-B2 is designed to be small and compact, making it easy to install in crowded electrical panels.
• Reliable Protection: With both thermal and magnetic protection, the MCB offers reliable operation and ensures the protection of your electrical system against fault conditions.
• Wide Application Range: Suitable for residential, commercial, and light industrial applications, providing versatile protection in a variety of scenarios.
• Fast Response: The breaker’s fast tripping response ensures that overcurrent and short circuit conditions are cleared quickly, preventing damage to the wiring and equipment.
• Ease of Installation: DIN rail mounting allows for easy and standardized installation, simplifying the overall wiring process.

Customization: 2CDS200936R0001 S2C-H11L

• • Overcurrent (50/51): Configure the pickup settings (in terms of multiples of nominal current), time delay settings, and the time characteristic (e.g., inverse, definite time, or IDMT). You can define the instantaneous (50) or time-delayed (51) overcurrent protection for both phase and earth faults.
  • Earth Fault (50N/51N): Set the pickup thresholds and time delays for ground fault detection. This can be adjusted based on system grounding methods (e.g., solidly grounded or high-impedance grounded systems).

• Differential Protection (87):

  • Set pickup thresholds for differential protection based on the current transformer (CT) ratios used in the system. The relay can be configured to detect both simple and restricted differential protection based on system needs (e.g., for transformers or generators).
  • Customize the sensitivity to minimize false trips and ensure fast detection of faults.

• Thermal Overload Protection:

  • The relay allows you to define the thermal time constant and overload settings, which helps in protecting transformers, motors, and other critical equipment from prolonged overload conditions.
  • The thermal model can be adjusted based on the type of load (e.g., motors, transformers) and expected operating conditions.

• Voltage and Frequency Protection:

  • Set custom under-voltage and over-voltage protection thresholds.
  • Configure under-frequency and over-frequency settings based on the grid frequency tolerance and the equipment's operating requirements.

• Restricted Earth Fault Protection (87N):

  • Sensitivity and fault detection near the transformer or generator’s neutral point can be adjusted for higher accuracy and lower fault detection thresholds.

• Time Delays:

  • Protection time delays for overcurrent, earth fault, and differential protection functions can be configured based on system protection coordination requirements.

The RET521 supports a variety of communication protocols and standards, enabling it to be seamlessly integrated into existing control, monitoring, and automation systems. Customizing these communication settings ensures compatibility with SCADA systems, remote monitoring, and other protection relays.

• IEC 61850 Compliance:

  • GOOSE messaging (Generic Object Oriented Substation Event): Customize GOOSE messages for fast, peer-to-peer communication within a substation.
  • Configure Report Control Blocks (RCBs) and Sampled Values to integrate the relay with other protection and control devices in the substation.
  • Set logical nodes and data attributes to tailor the relay’s communication behavior for system-specific requirements.

• Modbus RTU/TCP and DNP3:

  • Set up Modbus RTU or Modbus TCP communication for data exchange with SCADA and other monitoring systems.
  • Configure DNP3 (Distributed Network Protocol) for remote monitoring and control, which is commonly used in utility and industrial networks.

• Ethernet Configuration:

  • Customize Ethernet settings, including IP addresses, subnet masks, gateway settings, and communication ports to align with the network infrastructure.
  • Use SNTP (Simple Network Time Protocol) to synchronize the relay’s internal clock with the system’s time reference.

The RET521 has multiple digital and analog I/O options that can be customized to meet the control and monitoring requirements of your system.

• Digital Inputs:
  • Configure up to 8 digital inputs, which can be assigned to different purposes such as alarm triggers, fault indications, trip signals, and status monitoring. These inputs can be linked to external devices like switches or breakers.
  • Define the input voltage range for these digital inputs (e.g., 24 V DC, 48 V DC).
• Digital Outputs:
  • Customize up to 6 digital outputs to send trip signals, alarms, or other control commands to external devices like circuit breakers or visual indicators.
  • These outputs can be configured to activate based on specific protection triggers (e.g., overcurrent, earth fault).
• Analog Inputs:
  • You can customize analog inputs for measuring parameters like current, voltage, temperature, or other system variables. Typically, 4 analog inputs are available.
  • Set the scaling factor and the corresponding ranges for voltage and current measurements based on system ratings and CT/PT ratios.
• Relay Trip Contacts:
  • Configure the trip contact logic based on protection needs (e.g., delayed or immediate tripping) and choose between normally open (NO) or normally closed (NC) contacts.

The RET521 provides a Human-Machine Interface (HMI) that can be customized to suit the needs of the end user. This can improve operational efficiency and allow operators to access critical system data.

• Display Settings:
  • Customize the information displayed on the front panel LCD screen (e.g., fault details, protection settings, system status).
  • Define status LEDs for easy visualization of trip and alarm conditions (e.g., healthy, trip, warning).
• Password Protection:
  • Set password protection for different user levels to restrict access to critical settings (e.g., settings modification, fault reset, or trip acknowledgment). This ensures security and prevents unauthorized changes.
• Event Logging and Fault Recording:
  • The event log can be customized to include detailed timestamped records of events such as trips, alarms, and changes in system status. The fault waveform capture duration can be adjusted to suit fault analysis needs.
• Language Settings:
  • The language settings for the display can be customized to suit the operational region or team preferences. Many ABB devices allow for multiple languages in the interface.

The RET521 supports customizable protection schemes, which are essential for optimizing the protection of complex electrical networks. This customization includes:

• Zone Selective Interlocking (ZSI):

  • You can configure zone-selective interlocking between different relays to coordinate protection across multiple zones (e.g., in a substation or power plant) to ensure that only the faulty section of the network is disconnected.

• Logic and Time Coordination:

  • Set time delay sequences and logic functions for coordinated tripping and fault isolation. This is especially important in large networks where cascading trips must be avoided.

• Load Shedding and Priority Settings:

  • Customize the load shedding sequence, allowing for controlled disconnection of non-critical loads to maintain the stability of the most essential parts of the system during faults or overload conditions.

The RET521’s firmware and software are regularly updated by ABB to introduce new features, functions, and bug fixes. Customizing the relay for specific firmware versions ensures that the protection relay stays up-to-date and compatible with your system’s evolving needs.

• Software Configuration Tools:
  • REX 521 and PCM600 (ABB’s protection configuration software) are used to configure the relay’s settings, communication, protection functions, and system parameters. The software allows you to import/export settings for easy integration with other systems.
  • Firmware Updates: Updates can be loaded remotely or locally to improve functionality or add new features.

To meet increasing cybersecurity requirements in modern power systems, the RET521 supports cybersecurity measures such as:

• Password-based access control: For limiting access to sensitive relay settings.
• Encryption: Ensure that communication (especially via Ethernet, Modbus, IEC 61850) is secure.
• Secure remote access: Configurable firewall and authentication settings for remote monitoring and control.

Support and Services: 1MRK001530-AC RET521

Our Industrial Servo Drives are designed to provide precise control of motor speed and position. We offer a range of technical support and services to help you get the most out of your product, including:

• Installation assistance and guidance
• Product training and education
• Remote technical support for troubleshooting and problem-solving
• Repair and maintenance services
• Product upgrades and enhancements

Our team of experienced technicians and engineers are dedicated to ensuring that you have the support and resources you need to keep your operations running smoothly. Contact us today to learn more about our Industrial Servo Drives and the technical support and services we offer.