Siemens 3RA1924-2B Mechanical Interlocking Device
Siemens 3RA1924-2B Mechanical Interlocking for reversing starters.
The Siemens 3RA1924-2B is a mechanical interlocking device designed for reversing starters. It is intended for lateral mounting and includes one auxiliary contact (1 NC per contactor). This accessory is compatible with contactor sizes S0, S2, and S3. Please note, this is a phased-out product, with the SIRIUS 3RA2 series being its successor.
Mechanical interlocks are used in motor control applications to prevent both contactors in a reversing starter from energizing simultaneously, thereby preventing short circuits and damage to the motor or control system. They are essential safety components in applications like hoists, cranes, and reversing conveyors.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RA1924-2B. While it's a phased-out item, we can help you secure this part if you are maintaining existing systems. Consider the SIRIUS 3RA2 series for new installations or replacements.
| Type | Mechanical Interlocking |
| Application | Reversing Starters |
| Mounting | Lateral |
| Auxiliary Contacts | 1 NC per contactor |
| Contactor Sizes | S0, S2, S3 |
| Status | Phased-out |