Dold Accessories Company Overview Dold, a German pioneer in industrial automation and safety technology, extends its commitment to innovation beyond relays into a wide range…
Dold Accessories
Company Overview
Dold, a German pioneer in industrial automation and safety technology, extends its commitment to innovation beyond relays into a wide range of complementary accessories. Built on precision engineering, robust performance, and compliance with international safety standards, Dold accessories support complete system integration for control panels, machinery, and process environments.
Their accessory range includes essential devices such as buzzers, load transmitters, transformers, fault annunciator systems, contactors, display units, motor starters, soft starters, test and indication panels, and emergency stops—each designed to enhance reliability, diagnostics, and safety in industrial systems.
Comprehensive Accessory Portfolio
Dold’s accessory products are engineered to complement their SAFEMASTER, VARIMETER, and MINISTART series—ensuring seamless functionality across automation, safety, and power management systems. Every accessory is designed with precision, offering ease of installation, modular compatibility, and long operational life.
Key product groups include:
-
Audible and visual signaling devices (buzzers and annunciators)
-
Power and signal transmission equipment (transformers and load transmitters)
-
Control and protection devices (contactors, soft starters, and motor starters)
-
Indication and testing equipment (display units, panels, and E-stops)
Buzzers and Fault Annunciator Systems
Dold’s industrial buzzers and fault annunciator systems ensure clear and immediate signaling of system conditions. These devices provide both audible and visual alerts for fault detection, emergency conditions, or process status updates.
Engineered for harsh industrial environments, Dold buzzers are available in panel-mount and modular formats with adjustable sound levels and LED indicators.
Fault annunciator systems integrate seamlessly with monitoring relays and safety controllers to provide real-time fault indication across multiple channels, supporting applications in process automation, power distribution, and safety-critical operations.
Key Features:
-
High-intensity audible signaling
-
LED or backlit visual indication
-
Modular configuration with channel expansion options
-
Compact DIN-rail mounting for control panels
Load Transmitters and Transformers
Dold load transmitters and transformers form the backbone of reliable signal and power conditioning within automation and safety circuits.
Load transmitters convert sensor signals (e.g., from load cells or force sensors) into standardized analog outputs such as 0–10V or 4–20mA, enabling precise process control and feedback.
Meanwhile, Dold’s control transformers provide stable, isolated supply voltages for control and safety systems—ensuring dependable operation even under variable load conditions.
Applications Include:
-
Motor current monitoring and load measurement
-
Power supply regulation for safety relays and controllers
-
Isolation of control circuits from high-voltage mains
-
Feedback loops in process and motion control systems
Key Benefits:
-
High signal accuracy and electrical isolation
-
Compact form factor for cabinet mounting
-
Compliance with IEC and VDE standards
Contactors, Motor Starters, and Soft Starters
The Dold MINISTART and POWERSWITCH families extend into a complete range of contactors, motor starters, and soft starters, delivering intelligent control for industrial motors and drives.
These devices enable smooth motor ramp-up, protect against inrush currents, and reduce mechanical wear—prolonging equipment life while improving energy efficiency.
Motor Starters and Soft Starters Key Features:
-
Integrated overload and short-circuit protection
-
Adjustable start/stop ramp times
-
Compact modular construction for DIN-rail mounting
-
Suitable for motors up to several hundred kilowatts
Contactors from Dold are engineered for high switching frequency and long mechanical lifespan, providing reliable power distribution in automation systems.
Applications:
-
Conveyor drives and pumps
-
HVAC systems and compressors
-
Robotics and production machinery
-
Building automation and renewable energy systems
Display Units and Indication Panels
Dold’s display and indication panels enhance process transparency by providing real-time readouts of operational parameters such as voltage, current, or system status.
Paired with VARIMETER monitoring devices, these displays offer intuitive visualization for quick diagnostics and system checks. Models are available in both analog and digital variants with configurable setpoints, alarms, and LED indication.
Features:
-
Multi-parameter display (voltage, current, frequency, power)
-
High-contrast LCD or LED readouts
-
Easy integration into panel cutouts or enclosures
-
Optional communication interfaces for remote monitoring
These units play a crucial role in control panels, switchboards, and monitoring stations, ensuring operators can make quick, informed decisions during operation or maintenance.
Test and Indication Panels
Dold test and indication panels provide a central interface for visual inspection and functional testing of safety circuits and control loops.
Typically used alongside safety relays and annunciator systems, these panels allow technicians to manually simulate conditions such as emergency stops or fault triggers for system verification and diagnostics.
Benefits:
-
Rapid functional testing of safety circuits
-
Customizable LED indication layouts
-
Compatible with SAFEMASTER and VARIMETER modules
-
Reduces commissioning and maintenance time
Emergency Stops (E-Stops)
As part of Dold’s safety accessory range, emergency stop (E-stop) devices provide immediate circuit interruption in hazardous conditions. Designed to comply with EN ISO 13850, these E-stops offer mechanical reliability, tactile feedback, and clear actuation under emergency scenarios.
Paired with Dold safety relays, they ensure fail-safe shutdown of machines and processes while meeting stringent performance requirements up to PL e / SIL 3.
Features:
-
Robust push-pull or twist-release mechanisms
-
High-visibility mushroom heads
-
Mechanical latching for safety compliance
-
Integration-ready contacts with forcibly guided design
System Integration and Compatibility
Every Dold accessory is designed for seamless integration with Dold’s core product lines—SAFEMASTER, VARIMETER, MINISTART, and POWERSWITCH—creating cohesive safety and automation ecosystems.
From signaling and control to power conditioning and emergency protection, these accessories ensure interoperability across complex automation systems while simplifying compliance with EN ISO 13849, IEC 62061, and IEC 60204-1 standards.
Advantages of Dold System Integration:
-
Simplified wiring and mounting design
-
Consistent interface architecture across products
-
Unified diagnostics and status indication
-
Comprehensive support for functional safety certification
Industry Applications
Dold accessories are trusted across a wide range of industries, providing operational safety, reliability, and diagnostic transparency:
-
Power generation and distribution
-
HVAC and building automation
Dold’s Commitment to Quality and Innovation
Every Dold accessory undergoes extensive testing to ensure compliance with international electrical and safety standards. Their focus on engineering precision, environmental durability, and functional reliability continues to set benchmarks in the automation industry.
From modular annunciators to precision transmitters and robust E-stop devices, Dold accessories embody the same quality and innovation that define their relay products.
How to Learn More About Dold Accessories
Contact Venus Automation to discuss Dold accessories for your project.
Our team can assist with system design, configuration, and bulk procurement—ensuring you get the right components for reliable, compliant, and efficient industrial operation.