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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 5SY4310-8 |
| Manufacturer | Siemens |
| Product Type | Miniature Circuit Breaker |
| Actuator Type | Toggle |
| Rated Voltage | 400 V AC/DC |
| Rated Current | 10 A |
| Dimensions | 52.8 x 69.8 x 89.8 mm |
| Number of Poles | 3 |
| Breaking Capacity | 20 kA at 400 V AC according to IEC 60947-2 |
| Ambient Temperature Range | -25°C to +55°C (operating), -40°C to +75°C (storage) |
| Insulation Voltage | 440 V AC (with multi-phase operation) |
| Conductor Cross-Section | Solid: 0.75 - 35 mm², Stranded: 0.75 - 35 mm², Finely Stranded with End Processing: 0.75 - 25 mm² |
| Tightening Torque | 2.5 - 3 N·m (screw-type terminals), 22 - 26 lbf·in (screw connection) |
| Pollution Degree | 3 |
| Mechanical Operating Cycles | Typically 20,000 |
| Overvoltage Category | III |
| Touch Protection | Yes |
| Sealable | Yes |
| Halogen-Free | Yes |
| Conformity | EMC Declaration of Conformity, General Product Approval |
| Commodity Code | 853620 |
The Siemens 5SY4310-8 is a robust miniature circuit breaker designed to provide reliable overcurrent protection for electrical circuits. Engineered for quick assembly, this three-pole device features a D tripping characteristic, ensuring precise operation in the event of short-circuit or overload conditions. With a rated current of 10 A and a supply voltage rating of 400 V for AC, it is suitable for a wide range of industrial and commercial applications.
The 5SY4310-8 boasts a switching capacity current of 20 kA in accordance with IEC 60947-2, and a breaking capacity short-circuit current (Icn) of 10 kA, as per EN 60898-2 standards. This high breaking capacity ensures that the device can handle significant fault currents, providing robust protection for your electrical system.
The circuit breaker's compact dimensions, with a height of 90 mm, a width of 54 mm, and a depth of 76 mm, make it an ideal choice for space-constrained environments. It occupies a mere three modular width units on a DIN rail, facilitating efficient use of panel space.
Constructed with safety and durability in mind, the 5SY4310-8 is designed to withstand a wide range of environmental conditions, operating reliably at ambient temperatures ranging from -40 °C to 70 °C. Its vibration resistance is in accordance with IEC 60068-2-6, ensuring stable performance even in settings with mechanical disturbances.
The circuit breaker is also designed for ease of installation and maintenance, featuring a quick assembly system and a flexible mounting position. The terminals are compatible with a variety of conductor cross-sections, from 0.75 mm² to 35 mm² for solid and stranded wires, and up to 25 mm² for finely stranded wires with core end processing.
For those seeking a dependable and efficient solution for circuit protection, the Siemens 5SY4310-8 miniature circuit breaker is a prime choice, offering a blend of performance, safety, and ease of use.
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Frequently Asked Questions
What type of actuator does this miniature circuit breaker use?
The Siemens miniature circuit breaker is equipped with a toggle actuator for switching and manual operation.
Can this circuit breaker be used with both AC and DC voltage?
Yes, this circuit breaker is suitable for both AC and DC voltage applications, with a rated value of 400V for AC.
What is the breaking capacity of this circuit breaker?
The breaking capacity of this circuit breaker is 20kA in accordance with IEC 60947-2 for AC, and 10kA in accordance with EN 60898-2 for DC.
What is the ambient temperature range for operating this circuit breaker?
The circuit breaker can operate within an ambient temperature range of -25°C to 55°C.
What conductor cross-section sizes can be connected to this circuit breaker?
The circuit breaker can accommodate conductor cross-sections from 0.75mm² to 35mm² for solid and multibrin conductors, and from 0.75mm² to 25mm² for finely stranded conductors with wire end processing.
Does this circuit breaker come with combined terminals?
Yes, it features combined terminals at both the top and bottom for flexible installation options.
What is the tightening torque specification for the screw-type terminals?
The tightening torque for the screw-type terminals is specified between 2.5 N·m and 3 N·m.
Is the circuit breaker halogen-free?
Yes, the circuit breaker is halogen-free, making it suitable for environments where reducing toxic emissions is a priority.
What is the insulation voltage rating for this circuit breaker?
The insulation voltage rating with multi-phase operation for AC is 440V.
How many test cycles can this circuit breaker withstand for environmental testing?
The circuit breaker is designed to withstand 6 test cycles for environmental testing in accordance with IEC 60068-2-30.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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