DOLDs Dependable Industrial Parts

Posted on July 18, 2025 daniel davis Aviation

The fast-paced, high-output industrial environments of the modern era demand robust automation and safety solutions. Among the many respected companies producing items for this area is DOLD, a German-based manufacturer known for its control, automation, and safety technologies that comply with international safety standards. This blog will take a look at some of the most prominent parts DOLD offers and how they each contribute to operational excellence across industrial settings where machine control and power management are essential

Safety Relays

Safety relays monitor unsafe conditions and trigger shutdowns to protect personnel and equipment, with DOLD’s lineup offering:

  • Redundant circuit design for compliance with PL?e/Category?4 and SIL?3 standards
  • Fast response times suited to rapid fault shutdown
  • Compatibility with emergency stops, light curtains, and interlocks

Their flagship model, the UG?6946 sensorless standstill monitor, also boasts:

  • A compact, 22.5?mm design with multi-channel inputs
  • Built-in diagnostics for occurrences like broken wires and fault conditions
  • PL?e / SIL?3 safety performance via redundant design and forcibly guided contacts
  • “Muting” functionality to temporarily bypass standstill for specific use cases

Best-Suited Applications

  • Emergency stop circuits
  • Press control systems
  • Robotics and automated assembly lines

Timer Relays

DOLD’s timer relays deliver precise, time-based control over automation processes through features like:

  • Multifunctionality across timing modes, including on-delay, off-delay, pulse generation, interval timing, cyclic operation, star–delta transitions, and more
  • Extensive time ranges as short as milliseconds, up to hundreds of hours
  • Clear front-panel rotary switches and LEDs for easy setup and diagnostics

Best-Suited Applications

  • Conveyor systems
  • HVAC controls
  • Water treatment plants

Soft Starters and Motor Controllers

Motor control is central to automation, and DOLD offers soft starters and reversing starters that limit the mechanical placed stress on motors and equipment during startup through:

  • Controlled ramp-up voltage, reducing torque spikes and mechanical stress
  • Reversing capability for applications requiring bidirectional motion
  • Integrated protection, such as overload and phase failure detection

Best-Suited Applications

  • Conveyor belts and packaging machines
  • Pumps and fans
  • Textile machines and precision tool drives

Multifunctional Measuring Relays

DOLD’s extensive multifunctional measuring relay portfolio, branded VARIMETER, aids in observing parameters like:

  • Voltage, phase sequence, phase failure
  • Over-/undervoltage, asymmetry
  • Insulation faults
  • Current overload and short-time drops
  • Frequency, especially in generator-set contexts

Among their many notable options, some standout monitoring devices from DOLD include the:

  • BD?9080: This versatile device monitors undervoltage, overvoltage, phase asymmetry, phase failure, and phase sequence in three-phase systems. Additionally, it presents an adjustable response delay between 0.1 to 5 seconds.
  • RN/RL?9877: Offered in both single- and multi-phase versions, these relays detect overvoltage, undervoltage, voltage asymmetry, missing neutral, and phase sequence errors, all without requiring an external power supply.
  • MK?9300N / MH?9300: From DOLD’s VARIMETER?PRO line, these compact universal measuring relays monitor up to nine parameters, including but not limited to under-/over-voltage, current, frequency, and phase sequence. The MK?9300N contains one output relay, while the MH?9300 has two.

Best-Suited Applications

  • Data centers and critical infrastructure
  • Industrial process systems
  • Renewable energy setups

Source DOLD Parts Through a Trusted Procurement Partner

Backed by nearly a century of experience and exhibiting continued alignment with industry benchmarks, DOLD’s product offerings are perfect for system protection, timing control, signal isolation, motor management, and more. Whether you inevitably choose to go with DOLD parts or those from another company, it is imperative to avoid counterfeit components that can lead to compromised safety compliance and system-wide malfunctions. For this reason, be sure to secure all the components you need through a reputable procurement platform, such as Buy Automation Parts.

As a website owned by ASAP Semiconductor, a distributor serving diverse industries, this website offers access to thousands of high-quality industrial parts from trustworthy entities like DOLD and beyond. More than that, we provide various user-friendly means of browsing our inventory, as well as simple Request for Quote (RFQ) forms that can be submitted online to obtain curated fulfillment solutions from our staff. If you are ready to benefit from our dedication to quality assurance, fast lead times, and global delivery capabilities, kick off procurement on Buy Automation Parts at your earliest convenience.

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