General
Degree of protection	not specified
Switch-off time	1-7 min
Maximum power	2300 W
Connection type	3-wire
Accessories	terminal cover sealable
Cascadeable
Push-button input

The Theben ELPA 9 is a modular installation stairway light time switch (TLZ) for use in electrical installation systems. It is specifically designed for retrofitting existing installations and enables the automatic switching off of lighting fixtures after a preset time interval. The switch is designed for a 3-wire connection and features a push-button input, allowing manual activation of the lighting. The width is 1 TE, making it suitable for standard installation rails. It is not daisy-chainable, meaning it cannot be operated in combination with additional switches or relays in a series.

Applications

The ELPA 9 is used in residential and commercial buildings where automatic switching off of stairway or corridor lighting after a specific time is required. It is particularly suitable for installations where floor lighting is integrated, as it is designed for 3-wire connections. The application is exclusively for retrofitting existing installations, enabling integration into existing circuit diagrams without requiring a complete reconfiguration of the system.

Functions and Equipment in Detail

The switch operates electronically and allows adjustment of the switch-off time between 1 and 7 minutes. This time interval can be set at the device front according to requirements. The push-button input allows manual activation of the lighting, so that automatic switching off only occurs after the set time has elapsed. The function is specifically designed for installations where lighting is operated via a push-button that is not directly connected to the switch.

Technology Explained Simply

The ELPA 9 uses an electronic control system that regulates the switch-off time via an internal timer. The 3-wire connection type enables separation of the live and neutral conductors, which is necessary for integration into existing installations with floor lighting. The non-daisy-chainable design means the switch cannot be operated in a chain with other switches, but instead functions as an end device in the switching circuit. The adjustable switch-off time from 1 to 7 minutes offers flexibility for different application scenarios, such as corridors with varying usage frequencies.

Compatibility and Accessories

The switch is designed for a maximum power of up to 2300 W, making it suitable for controlling high-power luminaires. As an accessory, a terminal cover is available, which can be sealed for surface mounting. This cover secures the terminals against unauthorized access and can be added during installation if required.

Mounting and Installation

Mounting is carried out on standard installation rails with a width of 1 TE. The switch is intended for retrofitting existing installations, allowing it to be integrated into existing circuit diagrams without requiring a fundamental reconfiguration of the system. The terminal cover can be optionally mounted to limit access to the terminals.

Advantages in Operation

The ELPA 9 reduces energy consumption by automatically switching off the lighting after the set time has elapsed. The adjustable switch-off time allows adaptation to specific usage patterns. Use in existing installations without reconfiguring the entire circuit reduces installation costs and labor time. The electronic control ensures reliable and precise time control without mechanical wear parts.