Dold Timer Relays Company Overview Dold is a globally recognized leader in the field of industrial safety, automation, and control technology. With decades of innovation…

Dold Timer Relays

Company Overview

Dold is a globally recognized leader in the field of industrial safety, automation, and control technology. With decades of innovation in time delay relays and electromechanical solutions, Dold has established itself as a premium manufacturer trusted by engineers, integrators, and OEMs. Their product line-up includes safety relays, solid-state relays, motor controllers, and especially the renowned Dold timer relays—essential for applications requiring precise time-based control.

Overview of Dold Timer Relays

What is a Dold Timer Relay?

A Dold timer relay is an electromechanical or electronic component designed to manage time-based control operations in automation systems. It introduces a deliberate delay in switching processes—be it switching ON or OFF—based on a preconfigured time interval. These time delay relays are crucial in circuits that require start-up sequences, off-delay, on-delay, or pulse generation for machinery and process control.

Common Applications

Dold timer relays are widely used in:

Conveyor systems for delayed start-stop cycles
Lighting controls in industrial facilities
Elevator and access control systems
Heating, ventilation, and air conditioning (HVAC)
Safety interlocks and emergency stop circuits
Sequential motor control and industrial automation

The Dold Minitimer AA7610.21 Timer Relay

Key Features

The Dold Minitimer AA7610.21 is one of the most popular timer relays in the Dold catalog. Its standout features include:

Adjustable time range from 0.05 seconds to 100 hours
Versatile time functions (e.g., delay ON, delay OFF, pulse generation)
Compact 22.5 mm DIN rail housing
LED indicators for operating status and relay output
High switching capacity and mechanical durability
Wide voltage range for flexible application
Adjustment aid for precise timer setting

Technical Specifications

Specification	Detail
Supply Voltage (Nominal)	24V – 240V AC/DC
Voltage Range	±15% of nominal voltage
Contact Configuration	1 changeover contact (SPDT)
Time Range	0.05 s to 100 h
Delay Times	Configurable from milliseconds to hours
Setting Ranges	Fine-tuned with rotary switch and scale
Adjustment Aid	Front-panel rotary dial with indicator
Output Contacts	Electromechanical relay contacts
Contact Material	AgNi (Silver Nickel)
Rated Current	8A resistive load
Mounting	DIN rail
Approvals	CE, UL, CSA, EN 61812-1

Customer Support

Our Technical team at Venus Automation offers assistance with selecting the right Dold time delay relay, checking part compatibility, or understanding wiring diagrams. Support is available via phone or email during business hours.

Tips for Selecting the Right Timer Relay

Assessing Your Needs

Before selecting a timer relay:

Define whether you need on-delay, off-delay, cyclic, or pulse functions
Confirm the supply voltage and output type
Identify the mounting preference (DIN rail vs. PCB)
Comparing Different Models