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Safety Relays

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Safety Relays and Modules

Altech’s line of safety relays are manufactured by DOLD, a company well know in Europe for its quality safety relays. The products presented in this catalog will help you meet requirements of Machinery Directive 2006/42/EC, important international safety standards, CE-marking demand, and more, when exporting your machinery or equipment.

What is a Safety Relay?
A safety relay contains force guided contacts; they are also known as captive, locked or positive guided contacts. Force guidance in a relay means that the contacts in a contact set must be mechanically linked together so that it is impossible for the NO (normally open) and NC (normally closed) contacts to be closed at the same time. The contacts are linked so that no one contact in a relay can change state without changing all the contacts in that relay. There must be a 0.5 mm minimum air gap between the open contacts for the entire service life of the relay, even in the case of a failure. The force guidance of the relay contacts must always be preserved even when a relay part fails to function correctly.

Dold Safety Relays and Safety Modules help you meet important international standards, CE certification and more, when exporting your machinery.

  • Force Guided Contacts
  • 2 to 8 poles
  • 5 to 110VDC
  • PCB sockets
  • DIN Rail sockets and modules

Also included in this catalog is a Safety Module Selector Guide.

Typical applications include:

  • Emergency Stop Modules
  • DIN Rail safety modules
  • Safety door controls
  • Two-hand operating devices
  • Pressure mat controls
  • Light barriers and curtains
  • Speed controls
  • Monitoring devices
  • Two Hand Safety
  • Safety Gate
  • Monitor of Safety Circuits for Line Breakage and Shorts
  • Detection of Shorts on Emergency Stop Switches
  • Controlled, Safe Stop of Machinery in an Emergency Situation

Equipment controls systems for:

  • Elevators and escalators
  • Cranes
  • Door and gate drive systems
  • Printing and textile machinery
  • Robots
  • Stamping machines
  • Medical equipment
  • Cutting machines
  • Rail transportation systems
  • Signaling systems
  • Press systems
  • Approvals:

  • Safety relays with forced-guided contacts are the core components for safety devices and are indispensable when designing safety circuits. Safety devices are designed to protect man and machine as demanded in OSHA CFR 1910 Regulations “General Requirements for All Machinery”, and which is a mandatory requirement of the European Machinery Directive EMD 2006/42/EC.

    DOLD safety relays, manufactured according to DIN EN 50205 and IEC/EN 61810, are approved for use in safety applications to IEC 60204, EN 60204, DIN/VDE 0113, as well as Escalator Standard EN 115/06.95 and Elevator Standard EN 81-1(electric) and EN 81-2(hydraulic), and in safety related parts of control systems in IEC/EN 62061 and EN ISO 13849.

    Safety Relay
    OA 5642/43/44

    Features

    • 2-4 output contacts
    • 8A Switching Current
    • International approvals:
      TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High breakdown Voltage:
      contact/coil ≥ 4 KV
      contact/contact ≥ 4KV
    • High Creeping Distance:
      contact/coil ≥ 5.5 mm
      contact/contact ≥ 5.5 mm

    • Protection Rating IP 67, washable
    • Custom design available,
      - coil voltage - coil resistance,
      - contact pressure - operate/release time
    • Compact size, only 10.3mm high
    Safety Relay
    OA/OW 5669

    Features

    • 2 output contacts
    • 8A Switching Current
    • International approvals:
      TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High breakdown Voltage:
      contact/coil ≥ 4 KV
      contact/contact ≥ 4 KV
    • High Creeping Distance:
      contact/coil ≥ 8 mm
      contact/contact ≥ 5.5 mm
    • Protection Rating
      OA Version: IP 40, flow solder proof
      OW Version: IP 67, washable
    • Custom design available,
      -coil voltage -coil resistance,
      -contact pressure -operate/release time
    Safety Relay
    OA/OW 5670

    Features

    • 4 output contacts
    • 6A Switching Current
    • International approvals:
      TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High breakdown Voltage:
      contact/coil ≥ 4 KV
      contact/contact ≥ 3 KV
    • High Creeping Distance:
      contact/coil ≥ 8 mm
      contact/contact ≥ 4.5 mm
    • Protection Rating
      OA Version: IP 40, flow solder proof
      OW Version: IP 67, washable
    • Custom design available,
      -coil voltage -coil resistance,
      -contact pressure -operate/release time
    Safety Relay
    OA 5621 / OA 5621S

    Features

    • 4 output contacts
    • 8A Switching Current
    • International approvals:
      TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High breakdown Voltage:
      contact/coil ≥ 4 KV
      contact/contact ≥ 4 kV
    • High Creeping Distance:
      contact/coil ≥ 5.5 mm
      contact/contact ≥ 5.5 mm
    • Protection Rating IP 67, washable
    • Custom design available,
      - coil voltage
      - coil resistance,
      - contact pressure
      - operate/release time
      - double gold contacts
    • S-Type
      higher external clearance and creeping distance:
      contact/contact ≥ 7.5 mm
    Safety Relay
    OA 5622 / OA 5622S

    Features

    • 6 output contacts
    • 8A Switching Current
    • International approvals:
      TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High breakdown Voltage:
      contact/coil ≥ 4 kV

      contact/contact ≥ 4 kV
    • High Creeping Distance:
      contact/coil ≥ 5.5 mm
      contact/contact ≥ 5.5 mm
    • Protection Rating IP 67, washable
    • Custom design available,
      -coil voltage -coil resistance,
      -contact pressure -operate/release time
      -double gold contacts
    • S-Type
      higher external clearance and creeping distance:
      contact/contact ≥ 7.5 mm
    Safety Relay
    OA 5667 / OA 5667S

    Features

    • 2 output contacts
    • 6A Switching Current
    • International approvals: TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High breakdown Voltage:
      contact/coil ≥ 4 KV
      contact/contact ≥ 2.5 KV
      contact/contact ≥ 4 KV; S-Type
    • High Creeping Distance:
      contact/coil > 8 mm
      contact/contact > 4.5 mm; S-Type 8 mm
    • Custom design available,
      -coil voltage
      -coil resistance,
      -contact pressure
      -operate/release time
    Safety Relay
    OA 5611

    Features

    • 4 output contacts
    • 8A Switching Current
    • International approvals: TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High switching voltage
    • High breakdown voltage:
      contact/coil ≥ 4 KV

      contact/contact ≥ 2.5 KV
    • High creeping distance:
      contact/coil ≥ 8 mm

      contact/contact ≥ 4.5 mm
    • Crown contacts
    • Solid connection between coil and contact housing
    • Compact size
    • Custom design available,
      -coil voltage
      -IP67 washable
      -contact pressure
      -coil resistance
      -operate/release time
      -low power dissipation models
      -Manual test relay (slide activated)
    Safety Relay
    OA 5612

    Features

    • 6 output contacts
    • 8A Switching Current
    • International approvals: TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact Gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • Very high switching voltage
    • High breakdown voltage:
      contact/coil ≥ 4 KV

      contact/contact ≥ 2.5 KV
    • High creeping distance:
      contact/coil ≥ 8 mm

      contact/contact ≥ 4.5 mm
    • Crown contacts
    • Solid connection between coil and contact housing
    • Compact size
    • Custom design available,
      -coil voltage
      -IP67 washable
      -contact pressure
      -coil resistance
      -operate/release time
      -low power dissipation models
    Safety Relay
    OA 5601

    Features

    • 4 output contacts
    • 10A Switching Current
    • International approvals: TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High switching voltage
    • High breakdown voltage:
      contact/coil ≥ 4 KV

      contact/contact ≥ 4 KV
    • High creeping distance:
      contact/coil ≥ 8 mm

      contact/contact ≥ 5.5 mm
    • Crown contacts
    • Solid connection between coil and contact housing
    • Custom design available,
      -coil voltage
      -coil resistance,
      -contact pressure
      -operate/release time
    Safety Relay
    OA 5602

    Features

    • 6 output contacts
    • 10A Switching Current
    • International approvals: TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High switching voltage
    • High breakdown voltage:
      contact/coil ≥ 4 KV

      contact/contact ≥ 4 KV
    • High creeping distance:
      contact/coil ≥ 8 mm

      contact/contact ≥ 5.5 mm
    • Crown contacts
    • Solid connection between coil and contact housing
    • Custom coil voltage available
    • Custom design available,
      -coil voltage
      -coil resistance,
      -contact pressure
      -operate/release time
    Safety Relay
    OA 5603

    Features

    • 8 output contacts
    • 10A Switching Current
    • International approvals: TÜV, UL, cUL
    • Quality control check for each safety relay
    • Forced-guided contacts, all gold flash plated
    • Contact gap > 0.5 mm throughout life of relay
    • Various contact materials, mixed contact material optional
    • High coil voltage range
    • High switching voltage
    • High breakdown voltage:
      contact/coil ≥ 4 KV

      contact/contact ≥ 4 KV
    • High creeping distance:
      contact/coil ≥ 8 mm

      contact/contact ≥ 5.5 mm
    • Solid connection between coil and contact housing
    • Custom design available,
      -coil voltage
      -coil resistance,
      -contact pressure
      -operate/release time
    Accessories

    Timers, Monitoring and Sensing Relays

    Compact Dold Relays with touch protected terminals snap on to standard DIN rail or can be panel mounted. Available in a variety of designs for industrial applications.

    • On/Off Delay Timers
    • Asymmetry Relays
    • Voltage/Current Sensing Relays
    • Motor Protection Relays
    • Multifunction Relays
    • Frequency Monitoring Relays

    For more information contact Altech at:
    908-806-9400 • 908-806-9490 (FAX) • info@altechcorp.com • 35 Royal Road, Flemington, NJ 08822