The Siemens 3RU2900-1A is a genuine accessory from the SIRIUS motor protection range, designed for use with 3RU2 thermal overload relays. This accessory functions as a release slide for mechanical reset operation, enabling convenient manual resetting of compatible overload relays after a trip condition. Siemens includes release slides and cable releases as part of its remote and accessible reset solutions for SIRIUS overload relay systems.
The 3RU2900-1A is intended for applications where improved accessibility to the overload relay reset mechanism is required. It helps operators and maintenance personnel perform reset operations more efficiently, particularly in motor starter assemblies and control panels where direct access to the relay may be restricted. As part of the modular SIRIUS system, the accessory integrates seamlessly with Siemens thermal overload relay installations.
Thermal overload relays play a critical role in protecting motors from overheating caused by overload conditions, phase failures, or prolonged overcurrent situations. Following a trip event, the reset accessory enables quick restoration of operation after fault investigation and correction, helping minimize downtime and improve maintenance efficiency.
Designed according to Siemens industrial standards, the 3RU2900-1A provides dependable performance in demanding environments. It is commonly used in manufacturing facilities, process plants, conveyor systems, HVAC installations, pumping stations, compressor systems, and industrial automation applications where reliable motor protection is essential.
The compact design allows easy installation within control cabinets and motor starter assemblies while maintaining compatibility with Siemens SIRIUS motor protection components. Siemens accessories are engineered for long service life, operational reliability, and seamless integration into existing protection systems.
| Specification | Details |
|---|---|
| Product Name | Release Slide for Reset |
| Part Number | 3RU2900-1A |
| SKU | 3RU2900-1A |
| Brand | Siemens |
| Product Family | SIRIUS |
| Product Type | Thermal Overload Relay Accessory |
| Function | Mechanical Reset Operation |
| Compatible Series | Siemens 3RU2 Thermal Overload Relays |
| Application | Motor Protection Systems |
| Installation Type | Relay Mounted |
| Industrial Use | Yes |
| Manufacturer | Siemens |
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