Introduction
In modern industrial installations, the reliability of electric motors is critical for ensuring the continuity of technological processes. Downtime caused by failure of drive systems results in significant financial losses. Siemens 3VU1600-1MR00 automatic circuit breaker is specially designed to protect electric motors from overloads, short circuits and phase asymmetry. This device is the main element of protection in switchboards, providing quick disconnection when emergency current parameters are reached.
Technical characteristics
| Parameter | Meaning |
|---|---|
| Nominal voltage | 690 V AC |
| Setting range of tripping current | 1.6 - 2.5 A |
| Nominal frequency | 50/60 Hz |
| Fastening type | 35 mm DIN rail |
| Degree of protection (IP) | IP20 |
| Type of disconnector | Thermomagnetic |
| Mechanical wear resistance (cycles) | 100,000 |
The principle of action
Siemens 3VU1600-1MR00 operates on the basis of a combination of two disconnection mechanisms. Protection against long-term overloads is provided by a bimetallic plate that deforms under the influence of the thermal effect of the current. When the current reaches a value that exceeds the nominal value (according to the given setting), the plate opens the disconnection mechanism. Short-circuit protection is based on an electromagnetic principle: a high-current coil creates a magnetic field that instantly releases the contact locking mechanism, ensuring disconnection in milliseconds.
Fields of application
- Pumping stations: Protection of engines of submersible and surface pumps from overloads when the viscosity of the medium changes or the impeller is blocked.
- Conveyor systems: Ensuring the safe operation of conveyor drives operating in variable load modes.
- Ventilation equipment: Protection of fan motors from overheating due to clogging of filters or increased aerodynamic resistance.
- Machine tools: Integration into the control circuits of metalworking machines to prevent damage to motors when the tool jams.
Maintenance and life cycle
The recommended circuit breaker serviceability check interval is 12 months. The procedure includes measuring the insulation resistance and checking the functionality of the tripping mechanism. Mean time before failure (MTBF) under normal operating conditions exceeds 50,000 hours. Common causes of premature failure are environmental conditions (high humidity, pollution) and operation beyond the rated current characteristics.
Comparison with analogues
| Characteristics | Siemens 3VU1600-1MR00 | Schneider Electric GV2ME07 | ABB MS116-2.5 |
|---|---|---|---|
| Current range, A | 1.6 - 2.5 | 1.6 - 2.5 | 1.6 - 2.5 |
| Fastening type | DIN 35 mm | DIN 35 mm | DIN 35 mm |
| Compactness | High | High | High |
Compliance with standards
The 3VU1600-1MR00 switch complies with international standards IEC 60947-2 and IEC 60947-4-1. The equipment has CE certification, which confirms its safety for use in industrial networks in Europe and Ukraine. Conformity to DSTU EN 60947 guarantees stability of technical characteristics under appropriate operating conditions.
Conclusion
Siemens 3VU1600-1MR00 automatic switch is a reliable tool for ensuring the durability of motor equipment at industrial enterprises of Ukraine. Accuracy of setting and compliance with international standards make it a priority choice for modern automation systems. To select the necessary components and obtain detailed technical documentation, visit our UNITEC-D E-Catalog.
Sources
- Siemens Industry Online Support: Technical documentation for the 3VU16 series.
- IEC 60947-2: Low-voltage switchgear and controlgear - Part 2: Circuit-breakers.
- DSTU EN 60947-4-1: Low-voltage switching equipment.
