ABB S201-D32 32A D Curve Industrial Protection Device

The ABB S201-D32 is a single-pole Miniature Circuit Breaker (MCB) from the System pro M compact S200 series, engineered for robust industrial protection. This device is characterized by its D-curve tripping mechanism, 32A rated current, and a breaking capacity of 6 kA at 230/400V AC. Its compact design, with a width of 17.5 mm, and DIN rail mounting capability, facilitate easy integration into standard electrical enclosures. The S201-D32 features dual tripping mechanisms: a delayed thermal mechanism for overload protection and an electromechanical mechanism for short-circuit protection, ensuring reliable safeguarding against electrical faults. This MCB is compliant with various international standards, including IEC/EN 60898-1, IEC/EN 60947-2, and UL1077, affirming its suitability for residential, commercial, and industrial applications.

Product Specifications

| Parameter                   | Specification                                      |

| :-------------------------- | :------------------------------------------------- |

| Product Number              | S201-D32                                           |

| Manufacturer                | ABB                                                |

| Series                      | System pro M compact S200                          |

| Poles                       | 1                                                  |

| Rated Current (In)          | 32 A                                               |

| Tripping Characteristic     | D-Curve                                            |

| Breaking Capacity (Icn)     | 6 kA at 230/400 V AC                               |

| Rated Operational Voltage   | 230 V AC (IEC 60898-1), 230/400 V AC (IEC 60947-2) |

| Max Operational Voltage     | 253 V AC                                           |

| Rated Insulation Voltage (Ui) | 440 V                                              |

| Rated Impulse Withstand (Uimp)| 4 kV                                               |

| Electrical Durability       | 10,000 Cycles                                      |

| Mounting Type               | DIN Rail                                           |

| Terminal Type               | Screw Clamp                                        |

| Recommended Tightening Torque | 2.8 N-m                                            |

| Cable Cross-Section (Rigid) | Up to 35 sq-mm                                     |

| Cable Cross-Section (Flexible)| Up to 25 sq-mm                                     |

| Wire Stripping Length       | 12.5 mm                                            |

| Operating Temperature       | -25 °C to +55 °C                                   |

| Housing Colour              | RAL 7035 Grey                                      |

| Degree of Protection        | IP20 (IP40 in enclosure with cover)                |

| Dimensions (H x W x D)      | 88 mm x 17.5 mm x 69 mm                            |

| Standards Compliance        | IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 No. 235 |

Core Features & Market Positioning

The ABB S201-D32 distinguishes itself through its robust construction and reliable performance, positioning it as a premier choice for demanding industrial environments. Its D-curve characteristic is a key differentiator, specifically engineered to handle high inrush currents associated with inductive loads like motors and transformers without premature tripping. This inherent ability makes it a superior alternative to fused systems and other MCB types in applications prone to such surges. The S200 series, to which the S201-D32 belongs, offers a current-limiting design and adheres to stringent international safety standards, underscoring ABB's commitment to quality and electrical safety. The availability of various trip curves, configurations, and accessories further enhances its market appeal, allowing for tailored protection solutions.

Key Application Scenarios

The S201-D32's D-curve tripping characteristic makes it exceptionally well-suited for protecting circuits that experience significant, short-duration inrush currents. This includes applications involving motors, transformers, and other inductive loads commonly found in industrial machinery and power distribution systems. Its 32A rating and 6 kA breaking capacity are adequate for many general-purpose industrial and commercial power circuits, providing essential overcurrent and short-circuit protection. Furthermore, its compliance with standards like UL1077 extends its usability across North American installations, enhancing its global application reach. The compact, modular design ensures easy integration into control panels and distribution boards across various sectors.

Practical System Integration Guidance

Integrating the ABB S201-D32 into an electrical system is straightforward due to its modular design and standard DIN rail mounting. Secure electrical connections are achieved via screw clamp terminals, which accommodate rigid cables up to 35 sq-mm and flexible cables up to 25 sq-mm. A recommended tightening torque of 2.8 N-m ensures a reliable connection, preventing thermal issues and power loss. The device is designed for front panel mounting and is compatible with a range of accessories, such as auxiliary contacts and shunt trips, which can be mounted to save space and expand functionality. Proper wiring and ensuring the correct terminal torque are critical for optimal performance and safety.

Operation and Risk Mitigation

The ABB S201-D32 operates using two distinct tripping mechanisms to ensure comprehensive protection. The delayed thermal tripping mechanism responds to sustained overcurrents, preventing damage from gradual overloads. Conversely, the electromechanical tripping mechanism provides rapid disconnection in the event of a short circuit, a critical safety feature that mitigates the risk of electrical fires and equipment damage. Proper installation, adhering to specified torque values for terminals, and ensuring correct cable sizing are paramount to avoid operational risks. While specific fault codes are not inherent to the MCB itself, understanding the trip mechanisms helps in diagnosing the cause of a trip, which is typically overload or a short circuit. Regular inspection and ensuring the device is not subjected to conditions outside its specifications (e.g., overvoltage, extreme temperatures) are key to risk mitigation.

Scalability & Long-Term Value

The S200 series, including the S201-D32, offers inherent scalability through its modular design and compatibility with a wide array of ABB System pro M compact accessories. This allows for easy expansion of system functionality, such as adding alarm contacts or remote tripping capabilities, without requiring a complete system overhaul. Its compliance with multiple international standards ensures long-term relevance and compatibility with evolving electrical codes and system requirements across different regions. While the S201-D32 is a standalone protection device, its integration within the broader ABB ecosystem supports a long-term value proposition, particularly for facilities looking to standardize on ABB components for future upgrades or expansions. The robust electrical durability of 10,000 cycles further contributes to its long-term value by ensuring reliable service life.

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Frequently Asked Questions (FAQs)

What is the primary function of the ABB S201-D32?

The ABB S201-D32 serves as a critical overcurrent protection device in electrical systems. It is designed to safeguard circuits from damage caused by overloads and short circuits, preventing potential hazards and equipment failure.

Its D-curve characteristic makes it particularly adept at handling high inrush currents, typical of motor-starting applications. This feature ensures operational continuity where other MCBs might trip unnecessarily. The device incorporates both thermal and electromechanical tripping mechanisms for comprehensive protection.

This single-pole miniature circuit breaker is vital for maintaining the integrity and safety of electrical installations in industrial, commercial, and residential settings. Its reliable operation helps prevent electrical fires and protects sensitive equipment.

What are the key technical specifications of the ABB S201-D32?

This MCB features a 32A rated current and a D-curve tripping characteristic. It offers a breaking capacity of 6 kA at 230/400V AC. The rated operational voltage is 230V AC according to IEC 60898-1 and 230/400V AC according to IEC 60947-2.

It has a maximum operational voltage of 253V AC, a rated insulation voltage of 440V, and a rated impulse withstand voltage of 4kV. The device is designed for DIN rail mounting with screw clamp terminals and supports cable cross-sections up to 35 sq-mm for rigid conductors.

Key dimensions include a width of 17.5mm, height of 88mm, and depth of 69mm. It is compliant with IEC/EN 60898-1, IEC/EN 60947-2, and UL1077 standards, ensuring broad applicability and safety assurance.

What types of applications is the ABB S201-D32 best suited for?

The S201-D32 is ideal for applications with high inrush currents, such as those involving motors, transformers, and inductive loads. Its D-curve characteristic prevents nuisance tripping in these scenarios.

It is widely used in industrial power distribution, control panels, and machinery protection where reliable overload and short-circuit protection are paramount. Its robust design also makes it suitable for commercial installations with similar load characteristics.

The compliance with UL1077 standards also makes it a suitable choice for applications requiring North American certifications, further broadening its scope across diverse industrial environments.

How does the D-curve characteristic benefit industrial applications?

The D-curve on the ABB S201-D32 provides a specific trip response tailored for inductive loads. It allows for inrush currents that can be 10 to 13 times the rated current to flow momentarily without causing a trip.

This is crucial for industrial equipment like motors, which draw significantly higher current during startup than during normal operation. Without the D-curve, standard MCBs (like B or C curves) would trip prematurely, disrupting operations.

By accommodating these high transient currents, the D-curve ensures that the circuit breaker only trips when there is a genuine overload or short circuit, thus enhancing system reliability and reducing operational downtime.

What are the installation requirements for the ABB S201-D32?

Installation requires mounting the MCB onto a standard 35mm DIN rail. Ensure secure connections by using the screw clamp terminals provided, tightening them to the recommended torque of 2.8 N-m.

Use appropriate cable sizes; the device accepts rigid conductors up to 35 sq-mm and flexible conductors up to 25 sq-mm. A wire stripping length of 12.5 mm is recommended for optimal terminal connection.

Verify that the ambient temperature during operation remains within the specified range of -25°C to +55°C. The degree of protection is IP20, but it can be increased to IP40 when installed within an enclosure with a cover.

How does the ABB S201-D32 protect against overloads and short circuits?

The S201-D32 employs two distinct tripping mechanisms for robust protection. A delayed thermal mechanism detects sustained overcurrents, preventing damage from gradual overloads.

An electromechanical tripping mechanism provides rapid disconnection during short-circuit events. This feature is critical for preventing severe damage, electrical fires, and ensuring personnel safety by quickly isolating the fault.

These dual mechanisms ensure that the device responds appropriately to different fault conditions, offering comprehensive protection for connected equipment and electrical infrastructure.

What is the breaking capacity of the ABB S201-D32?

The ABB S201-D32 has a rated short-circuit breaking capacity (Icn) of 6 kA at 230/400V AC according to IEC 60898-1. This means it can safely interrupt fault currents up to this level without being destroyed.

For higher fault current scenarios, the rated ultimate short-circuit breaking capacity (Icu) according to IEC 60947-2 is 10 kA at 230V and 400V AC. This indicates its capability to safely break fault currents in more demanding industrial situations.

This breaking capacity ensures the device can effectively interrupt potentially damaging fault currents, thereby protecting the electrical system and preventing further damage or hazards.

Can the ABB S201-D32 be used in both AC and DC systems?

While primarily designed for AC systems, the ABB S201-D32 can operate in DC systems under specific conditions. It has a rated operational voltage of up to 72V DC.

However, its D-curve characteristic is optimized for AC inductive loads. Using it in DC circuits, especially with inductive components, requires careful consideration of the specific application and adherence to relevant DC circuit protection guidelines.

For most standard industrial applications, it is exclusively used for AC power distribution. It's crucial to consult the product datasheet or ABB technical support for specific DC application suitability and any necessary adjustments or limitations.

What is the expected electrical durability of the ABB S201-D32?

The ABB S201-D32 is rated for an electrical durability of 10,000 cycles. This metric signifies the number of operational switching cycles the device can perform under normal load conditions before significant degradation of its internal components occurs.

This durability rating assures users of the MCB's longevity and reliability in typical industrial environments where frequent switching or fault interruptions may occur over its service life.

The extended lifespan contributes to reduced maintenance costs and minimizes the need for premature replacements, offering a cost-effective protection solution for long-term installations.

What accessories can be integrated with the ABB S201-D32?

The ABB S201-D32 is part of the System pro M compact S200 range, which supports a variety of accessories to enhance its functionality. These include shunt trips for remote tripping, undervoltage releases for safety disconnection, and auxiliary or alarm contacts for signaling.

Bottom-fitting auxiliary contacts can be mounted to save space within the electrical enclosure. Additionally, busbars are available for creating efficient connections within distribution boards.

These accessories allow for customization and expansion of the protection system, enabling features like remote monitoring, control, and integration with automated systems, thereby increasing the overall system's intelligence and operability.