Auxiliary contact Schneider Electric LADT0 1NO/1NC white, operating temperature -40–70°C

Schneider Electric LADT0 is an auxiliary time-delay contact block with one normally open (NO) and one normally closed (NC) contact, supplied in a white housing. It provides an adjustable on-delay range of 0.1–3 seconds and is specified for operating temperatures from -40 to 70 °C. The compact module is intended for use in control stations, pushbutton units and automation panels where a short, repeatable delay or additional auxiliary switching points are required.

Advantages

The LADT0 offers a simple mechanical method to add a short adjustable on-delay to existing control circuits without programming. Its 0.1–3 s adjustment range covers common short-delay needs, while the combined NO and NC contacts permit flexible wiring for both make- and break-type functions. The module is compact, fits typical industrial pushbutton housings, and is suitable for integration into control station assemblies for signaling and interlocking tasks.

Suitable for

• Adding short adjustable on-delay timing to control and signalling circuits
• Interlock logic and sequencing in machinery, conveyors and automation panels
• Use as an auxiliary contact in control stations, pushbutton units and operator panels
• Applications that require both a normally open and a normally closed contact simultaneously

Когда может не подойти

Этот контактный блок предназначен для коротких фиксируемых диапазонов задержки включения и не годится, если требуется сложная последовательность временных операций, очень большие задержки или удалённая цифровая конфигурация. Он не заменяет многофункциональные таймеры или ПЛК, когда нужны расширенные функции времени, несколько диапазонов или циклическое повторение тайминга.

Key specifications

• Time delay type: adjustable on-delay (0.1–3 s)
• Time range: 0.1–3 seconds
• Contact configuration: 1 normally open (NO) + 1 normally closed (NC)
• Operating temperature: -40 to 70 °C
• Mounting: designed for integration into control stations and pushbutton housings
• Intended use: auxiliary switching for low-voltage control and signalling circuits in automation panels

How to use

Install the LADT0 into a compatible control station or pushbutton housing following the mechanical instructions of the station manufacturer. Wire the NO and NC contacts into the control circuit according to standard on-delay wiring diagrams, observing correct voltage ratings and polarity of surrounding devices. Adjust the delay within the 0.1–3 s range using the built-in adjustment mechanism and verify operation by cycling the input and observing the timed output. Perform insulation, continuity and contact-condition checks after installation and before commissioning.

What to consider before purchase

• Confirm physical compatibility with your control station or pushbutton housing
• Verify that the 0.1–3 s on-delay range meets your application timing requirements
• Ensure contact ratings and voltage compatibility match your control circuit
• Consider whether a programmable timer or PLC is more appropriate for complex or long-duration timing needs

Usage recommendations

For reliable operation, use LADT0 within the control station’s specified environmental limits, avoid corrosive atmospheres, and inspect contact condition regularly in applications with frequent switching.