Siemens 5SV3342-6 Double Pole Miniature Circuit Breaker 4P 25A 30mA

The Siemens 5SV3342-6 is a robust 4-pole, 25A, 30mA miniature circuit breaker (MCB) designed for reliable electrical protection in demanding industrial and commercial environments. This device offers superior overcurrent and earth-fault protection, ensuring the safety of personnel and sensitive equipment. Its key advantages include high breaking capacity, enhanced tripping sensitivity, and superior durability, making it a preferred choice for applications requiring stringent safety standards.

Siemens 5SV3342-6: Product Specifications

| Parameter              | Specification                                 |

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

| Manufacturer           | Siemens                                       |

| Product Series         | 5SV3                                          |

| Number of Poles        | 4                                             |

| Rated Current (In)     | 25A                                           |

| Rated Residual Current | 30mA                                          |

| Tripping Characteristic| Type C (for inductive loads)                  |

| Rated Voltage (Ue)     | 400V AC                                       |

| Rated Breaking Capacity| 6 kA (IEC 60898-1)                            |

| Frequency              | 50/60 Hz                                      |

| Insulation Voltage     | 500V                                          |

| Degree of Protection   | IP20                                          |

| Operating Temperature  | -25°C to +45°C                                |

| Mounting Type          | DIN Rail (35mm)                               |

| Terminal Type          | Screw Terminals                               |

| Compliance Standards   | IEC 60898-1, IEC 61009-1                      |

Core Features & Market Positioning

The Siemens 5SV3342-6 distinguishes itself through its advanced earth-leakage detection capabilities, providing essential protection against indirect contact and fire hazards. Its Type C tripping curve is optimized for circuits with moderate inrush currents, common in motor control and lighting systems, preventing nuisance tripping while maintaining robust overcurrent protection. This MCB’s robust construction and adherence to international standards like IEC 60898-1 and IEC 61009-1 underscore its reliability and suitability for critical infrastructure. Siemens' reputation for engineering excellence further solidifies the 5SV3342-6’s market position as a dependable and high-performance circuit protection solution.

Key Application Scenarios

This 4-pole MCB is ideally suited for protecting power circuits in commercial buildings, industrial facilities, and control panels where a 30mA earth leakage sensitivity is required. Common applications include protecting sensitive electronic equipment, main distribution boards, motor circuits, and lighting installations. Its suitability for 4-pole configurations ensures complete isolation for three-phase systems, safeguarding against phase-to-phase and phase-to-ground faults simultaneously. The 25A rating makes it a versatile choice for moderate power loads within these environments.

Practical System Integration Guidance

Integrating the Siemens 5SV3342-6 into existing electrical systems is straightforward due to its standard DIN rail mounting and readily accessible screw terminals. Ensure that the incoming power supply is de-energized before installation. Connect the incoming live conductors to the designated line terminals and the neutral conductor to the dedicated neutral terminal. The outgoing load conductors should then be connected to the corresponding load terminals. It is critical to ensure that all connections are tightened securely to prevent overheating and ensure optimal electrical contact. For 4-pole applications, proper phase rotation and neutral conductor connection are paramount for correct operation.

Operation and Risk Mitigation

The Siemens 5SV3342-6 operates by detecting overcurrents (overloads and short circuits) and residual currents exceeding 30mA. Upon detection, it rapidly interrupts the circuit, preventing damage to equipment and mitigating the risk of electric shock or fire. In the event of a fault, the toggle lever will move to the "OFF" position. To reset, ensure the fault condition has been cleared, then move the lever to the "ON" position. Common troubleshooting involves identifying the cause of the trip, which could be a persistent overload, a short circuit, or a persistent earth fault. Avoid repeatedly attempting to reset the breaker without identifying and rectifying the underlying fault.

Scalability & Long-Term Value

While the Siemens 5SV3342-6 is a standalone protective device, its integration within the broader Siemens industrial automation ecosystem offers long-term value. Compatibility with other Siemens circuit protection devices and control gear ensures seamless expansion of electrical installations. For facilities moving towards digitalization and IIoT, this MCB can be part of a system monitored by smart energy meters or gateways, providing data on circuit status and energy consumption. This forward-thinking approach allows for predictive maintenance and optimized energy management, enhancing the overall operational efficiency and lifespan of electrical infrastructure.

Frequently Asked Questions

1. What is the primary function of the Siemens 5SV3342-6?

The Siemens 5SV3342-6 is a miniature circuit breaker. It provides overcurrent protection against overloads and short circuits. It also offers earth leakage protection with a sensitivity of 30mA, preventing electric shocks.

2. Can this circuit breaker be used for single-phase or three-phase applications?

This model is a 4-pole breaker. It is designed for use in three-phase systems, offering protection across all four conductors (three phases and neutral).

3. What does the "30mA" rating signify for this Siemens MCB?

The 30mA rating indicates the residual current at which the circuit breaker will trip. This level is considered safe for preventing severe electric shocks from indirect contact.

4. What type of loads is the Siemens 5SV3342-6 suitable for?

This breaker features a Type C tripping characteristic. This makes it ideal for circuits with moderate inrush currents, such as lighting, socket outlets, and motor circuits.

5. How do I install the Siemens 5SV3342-6 into a distribution board?

Install the 5SV3342-6 onto a standard 35mm DIN rail. Ensure the power is off. Connect the incoming supply to the line terminals and the outgoing load to the respective terminals.

6. What is the breaking capacity of the Siemens 5SV3342-6?

The breaking capacity is 6 kA. This rating ensures the breaker can safely interrupt fault currents up to 6000 Amperes under specific fault conditions.

7. What standards does the Siemens 5SV3342-6 comply with?

This MCB complies with IEC 60898-1 and IEC 61009-1 standards. These are international regulations for circuit breakers and residual current operated circuit-breakers.

8. How can I reset the Siemens 5SV3342-6 after it trips?

To reset, first identify and clear the fault condition. Then, move the toggle lever firmly to the "ON" position. Do not force it if the fault persists.

9. What is the operating temperature range for this circuit breaker?

The Siemens 5SV3342-6 can operate in temperatures ranging from -25°C to +45°C. This wide range allows for use in various environmental conditions.

10. Does this Siemens MCB offer protection against DC fault currents?

This specific model is designed to detect AC residual currents. It does not offer protection against pure DC fault currents.