5SY6225-8

Product Description

Home > Products > Circuit Breakers > Siemens > 5SY6225-8 Need Siemens 5SY6225-8 / 5SY6 D 25A/2P? Miniature Circuit Breaker for Low voltage distribution systems. Supplied with full traceability and documentation.... Price & Availability 12.00 USD （参考价 / est. market price） Classified as a miniature circuit breaker, it is positioned as a direct replacement and service part for existing installations. It is intended for use within Low voltage distribution systems, where dependable operation and a precise fit are essential to keeping the plant running. Listed as Active, it is offered as a maintained and verified spare that supports the continued operation of the installed base. Key technical specifications include: The Rated Current (In) is 25 A. Its Number of Poles is rated at 2P. For reference, the Tripping Curve is D. The Rated Breaking Capacity is 6 kA (EN 60898). Its Rated Voltage is rated at 400 V AC (working); 440 V Ui; 72 V DC. For reference, the Frequency is 50/60 Hz. The Mounting Type is DIN rail. Its Standards is rated at IEC/EN 60898-1, IEC/EN 60947-2. For reference, the Degree of Protection is IP20 (with connected conductors). The Operating Temperature is -25 degC to +55 degC. Its Storage Temperature is rated at -40 degC to +70 degC. For reference, the Dimensions is 36 x 90 x 76. Notable features of this unit: 6kA breaking capacity per IEC 60898-1. 2-pole configuration for single-phase or two-wire systems. D tripping curve for high inrush current applications (e.g., motors, transformers). Rated current of 25A. Compact design for DIN rail mounting. High reliability and long service life. Typical applications include Industrial motor protection, Transformer primary protection, Commercial building distribution boards, HVAC systems, Pump and compressor control panels. It is compatible with or cross-references Siemens 5SY6 series auxiliary contacts (e.g., 5ST3010), Siemens 5SY6 series shunt trips (e.g., 5ST3020), Siemens 5SY6 series undervoltage releases (e.g., 5ST3030). Equivalent / cross-reference designation: 5SY6225-8, 5SY6 D 25A/2P. Within industrial automation and process-control environments, components of this type are relied upon to keep critical equipment operating safely and efficiently. They are typically specified where uptime, repeatability and a predictable maintenance cycle matter more than upfront cost. A miniature circuit breaker such as this one forms part of a larger machine or system, so correct identification and fitment directly affect the performance and safety of the whole installation. Siemens parts are widely used across power generation, manufacturing, oil and gas, water and process industries, where engineering teams standardise on proven series to simplify spares planning. When selecting a replacement, confirm the exact model designation and verify that the mechanical and electrical interface matches the unit currently installed. Cross-checking the order code, mounting style and connection type against the existing device helps avoid compatibility issues and unplanned downtime during a maintenance window. Where several variants exist, the suffix often defines voltage, range or firmware, so it should be matched precisely rather than approximated. This item is offered from our active stock of current and discontinued industrial parts. Each listing is verified against the manufacturer designation before shipment so you receive the correct part for your application. Availability and lead time vary by item; our team can confirm the fastest option for your required quantity and provide a formal quotation on request. Common questions: Regarding "What is the breaking capacity of the Siemens 5SY6225-8": The breaking capacity is 6kA according to IEC 60898-1. Regarding "What is the tripping curve of this circuit breaker": It has a D tripping curve, which is suitable for circuits with high inrush currents like motors and transformers. Please contact us to confirm current pricing, availability and delivery for your required quantity; volume and project pricing are available on request. The Siemens 5SY6225-8 / 5SY6 D 25A/2P is a miniature circuit breaker. Basic Product Information 2-pole configuration for single-phase or two-wire systems D tripping curve for high inrush current applications (e.g., motors, transformers) Rated current of 25A Compact design for DIN rail mounting High reliability and long service life 6kA breaking capacity per IEC 60898-1 Technical Specifications Version & Model Difference The model 5SY6225-8 is the standard version with a D curve. There are no significant regional variations for this model. The 5SY6 series is the current generation, replacing older 5SY4 series. The '8' suffix indicates the breaking capacity of 6kA. Application Scenarios Industrial motor protection Transformer primary protection Commercial building distribution boards Pump and compressor control panels What is the tripping curve of this circuit breaker? It has a D tripping curve, which is suitable for circuits with high inrush currents like motors and transformers. Is this circuit breaker suitable for single-phase applications? Yes, it is a 2-pole breaker, which can be used for single-phase (2-wire) or two-phase applications. Can I use this breaker for DC applications? No, it is designed for AC applications only (230/400V AC). What is the breaking capacity of the Siemens 5SY6225-8? The breaking capacity is 6kA according to IEC 60898-1. 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