EMT6-DB(230V) 066401
EMT6-DB(230V) 066401
EMT6-DB(230V) 066401
EMT6-DB(230V) 066401
EMT6-DB(230V) 066401
EMT6-DB(230V) 066401
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EMT6-DB(230V) 066401

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Eaton Moeller EMT6 thermistor overload relay for machine protection with 230 V AC control supply.
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Technical specifications for EMT6-DB(230V) 066401

  • Manufacturer:
    EATON
  • Part Number:
    EMT6-DB(230V) 066401
  • Product Family:
    EATON
  • Product Type:
    Thermistor Overload Relay
  • Stock:
    1
  • Control supply:
    230 V AC, 50/60 Hz
  • Measuring range:
    750 to 12000 ohm
  • Trip resistance:
    3600 ohm
  • Reset resistance:
    1600 ohm
  • Reset functions:
    Manual or remote
  • Protection degree:
    IP20
  • Weight:
    0.156 kg
  • Estimated shipping dimensions:
    10.3x8.3x2.3cm
  • Tariff Code:
    8536490000
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Reset Logic Trip Thresholds Installation Product Applications

Features:

  • Thermistor protection: The relay responds to a motor's PTC sensor circuit instead of measuring motor load current directly.
  • Catalog-specific supply: The complete EMT6-DB(230V) 066401 configuration is the 230 V AC control-supply version.
  • Operator interface: Reset selection, a dedicated test function, and status indication support the protection workflow.
EMT6-DB(230V) 066401 adds temperature-based protection to machines whose motors contain suitable PTC sensors. It converts the sensor circuit's thermal condition into relay action for the machine control system.

Because the sensing path follows winding temperature rather than line current, the device complements the motor starter's electrical protection. Its contacts become part of the shutdown and restart logic designed for the machine.

The complete catalog identity matters when choosing a replacement because control voltage and reset behavior affect panel integration. The correct unit should fit the existing protection concept instead of forcing changes to the surrounding control circuit.

Apter Power can assist with official catalog review and quotation coordination for EMT6-DB(230V) 066401 before procurement.
Eaton EMT6-DB(230V) 066401 Thermistor Overload Relay Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Selectable reset behavior supports machine-specific restart control
  • Manual and remote reset paths must follow the control design
  • Use the dedicated test button during approved commissioning
  • PTC measuring range is 750 to 12000 ohm
  • Nominal trip resistance is 3600 ohm
  • Nominal reset resistance is 1600 ohm
  • Use the exact 230 V AC 50/60 Hz supply variant
  • Observe IP20 enclosure requirements
  • Verify the sensor circuit and output contacts before service
  • PTC thermistor monitoring for electric motors
  • Machine overtemperature shutdown circuits
  • Motor-protection panels requiring test and remote reset
Description
EMT6-DB(230V) 066401 is an Eaton Moeller EMT6 thermistor overload relay for machine protection. Catalog 066401 uses a 230 V, 50/60 Hz control supply and provides manual or remote reset selection, a test button, and power and fault indication.

EMT6-DB(230V) 066401 monitors a PTC sensor circuit rather than motor load current directly. Installation planning should verify the 230 V variant, sensor resistance limits, reset mode, terminal wiring, enclosure conditions, and required machine-protection response.
Alternative Names
Eaton 066401 EMT6-DB 230V Thermistor Relay
Technical notes
EMT6-DB(230V) 066401 is the fixed 230 V AC version and must not be confused with the wide-range EMT6-DB catalog. Verify the PTC sensor loop, reset selector, remote-reset wiring, output-contact logic, and local supply frequency before energization. Test the shutdown chain under the machine builder's approved protection procedure.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can EMT6-DB(230V) 066401 replace an EMT6 relay powered from another control voltage?
No. This catalog is the 230 V AC, 50/60 Hz version, so the control supply must match before installation; use the exact voltage variant instead of adapting a different coil supply.
Why might a motor circuit using EMT6-DB(230V) 066401 refuse to reset after cooling?
The PTC circuit must fall below the documented reset region and the selected manual or remote reset path must operate correctly. Test the sensor loop and reset input before treating the relay as defective.
When should the remote-reset input of EMT6-DB(230V) 066401 be enabled in a machine design?
Enable it only when the machine risk assessment permits a remote restart path and the control circuit prevents unintended motion. Otherwise retain manual reset and validate the trip chain at the panel.
How can nuisance trips around EMT6-DB(230V) 066401 be investigated without bypassing protection?
Measure the PTC loop and compare it with the 3600-ohm nominal trip and 1600-ohm nominal reset points. Stop if the sensor circuit is open, shorted, or routed through an unapproved bypass.
Which enclosure condition matters when mounting EMT6-DB(230V) 066401?
Its IP20 protection requires a suitable control enclosure for the installation environment. Preserve terminal access and ventilation while preventing contact with live parts and contamination.
Before energizing EMT6-DB(230V) 066401, what commissioning result should block release?
Do not release the circuit if the test button, PTC trip, selected reset method, or output contacts fail the approved sequence. Correct the wiring or control logic and repeat the complete protection test.