Littelfuse TDUB3000A Digi-Set Delay-On-Break Solid State Timer Relay 24-120VAC 1-1023s

The Littelfuse TDUB3000A is a Digi-Set solid state timer relay featuring Delay-on-Break operation with digital timing circuitry and universal voltage compatibility. Designed for demanding process control and OEM equipment applications, this compact relay delivers precise, repeatable timing performance in a surface-mount form factor.

How It Works (Delay-on-Break Operation):

Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output energizes immediately. The time delay begins when the initiate switch is opened (trailing edge triggered), and the output remains energized throughout the timing period. Reclosing the initiate switch during timing resets the time delay. Loss of input voltage also resets both the time delay and the output.

Key Features:

• DIP Switch Selectable Time Delays: Adjustable from 1 second to 1,023 seconds (approximately 17 minutes) in the TDUB3000A range
• Universal Voltage Input: Operates on 24–120VAC supply voltage
• Digital Timing Circuitry: Provides consistent and accurate time delays across the full operating range
• SPST/NO Output (1 Form A): 1A rated solid state output
• Male Quick-Connect Terminal Connections: For fast, secure wiring
• Surface Mounting: Compact 2 in. H x 2 in. W x 1.21 in. D housing
• Wide Operating Temperature: Rated from -40°F to 60°F (-40°C to 15.6°C)
• Ideal for Process Control & OEM Equipment: Multi-voltage capability and broad time range suit a wide variety of industrial applications

The Littelfuse TDUB3000A is part of the SSAC TDUB Series, combining reliable solid state technology with the flexibility of DIP switch programming — no external potentiometers or analog adjustments required. This unit is also cross-referenced under LTFS-TDUB3000A.