The product A9A15096 from Schneider Electric is a side-mountable auxiliary contact of the Acti 9 iSW series. It serves as an add-on module for iSW series disconnectors with rated currents from 20 to 32 A, enabling the transmission of switching states to external control or indication systems. The auxiliary contact features a changeover contact (SPDT), which changes its state when the main switch is operated, thus signaling the switching position of the main device. Installation is performed laterally on the 35-mm DIN rail, allowing it to be directly mounted onto the disconnector without requiring additional space in the enclosure.

Applications
The auxiliary contact A9A15096 is used in industrial and commercial electrical installations where visual or electrical monitoring of the switching position of a disconnector is required. Examples include plant control systems, safety circuits, alarm or status indication systems, where the exact position of the switch (on/off) is important for operational monitoring or fault diagnosis. It is specifically designed for iSW switches with rated currents from 20 to 32 A and cannot be connected to switches with higher load ratings.

Functions and Features in Detail
The auxiliary contact is equipped with a changeover contact (SPDT), which switches its contact state when the main switch is operated. This enables the control of external devices such as indicator lights, relays, or control modules. The rated operational currents are 3 A at 415 V AC and 6 A at 250 V AC, making it suitable for typical control and signaling applications. Connections are made via screw terminals designed for cable cross-sections up to 10 mm². The terminals feature IP20 protection, ensuring safety against contact with solid foreign objects.

Technology Explained Simply
The auxiliary contact operates mechanically in sync with the main switch. When the disconnector is operated, a mechanical drive moves the auxiliary contact simultaneously. This transmits the state of the main device (on or off) to an external device. The technology is wear-resistant, as the contacts are only activated when the switch is operated. The switching function is performed by a changeover contact that switches between states with each operation — ideal for applications where the switch state must be monitored.

Compatibility and Accessories
The auxiliary contact A9A15096 is specifically designed for iSW series disconnectors with rated currents from 20 to 32 A. Compatible devices include, for example, models A9S60232 (2-pole, 32 A), A9S60432 (4-pole, 32 A), A9S60120 (1-pole, 20 A), A9S60320 (3-pole, 20 A), A9S61232 (2-pole, 32 A with indicator light), A9S60332 (3-pole, 32 A), A9S60220 (2-pole, 20 A), A9S60132 (1-pole, 32 A), A9S60420 (4-pole, 20 A), A9S61220 (2-pole, 20 A with indicator light), and A9S61132 (1-pole, 32 A with indicator light). Installation is directly on the side of the disconnector, with a size of 2 modules (18 mm width) on the 35-mm DIN rail.

Installation and Mounting
Mounting is performed laterally on the disconnector, which is already installed on a 35-mm DIN rail. The auxiliary contact is secured using a special bracket or directly to the switch side, ensuring that the mechanical connection between the main device and the auxiliary contact guarantees synchronized transmission of the switching movement. Connections are made via screw terminals suitable for cables up to 10 mm². Installation requires no additional tools other than a screwdriver for securing the cables.

Operational Advantages
The auxiliary contact enables reliable monitoring of the disconnector’s switching position, simplifying maintenance and system diagnostics. Mechanical synchronization ensures that the auxiliary contact’s state always matches that of the main device. The robust design with screw terminals and IP20 protection ensures safe and long-lasting operation in industrial environments. Combination with other auxiliary modules is not intended, as the auxiliary contact is designed as a standalone module.

Additional Technical Specifications
The auxiliary contact has dimensions of 75 mm (length) × 18 mm (width) × 77 mm (height) and is finished in white (RAL 9003). The terminals have IP20 protection, while the enclosure offers IP40 protection, safeguarding against contact and limited ingress of foreign objects. The operating voltage is not explicitly specified, but rated operational currents are defined for 250 V AC and 415 V AC, indicating suitability for standard mains voltages. The size corresponds to 2 modules (18 mm) on the DIN rail, enabling compact installation.