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Threshold relay – Protective relay

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FREQUENCY CONTROL RELAY

rcf35

Downloads:

  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2
  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2

rcf35

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• Monitoring of mains frequency variations Self-powered: 115Vac, 230Vac, 400Vac
for mains frequencies from 40 Hz to 450 Hz
• 1000-point LED frequency display
Resolution: 0.1 Hz < 100 Hz; 1 Hz up to 450 Hz
• Threshold configurable via front panel pushbutton, adjustment resolution 0.1 Hz
• Over- and under-frequency via 2 relay outputs; direction and delay configurable; status indication via LED
• DIN rail mounting, 2 modules (35 mm)
• Application: Monitoring of electrical power sources – generator, wind turbine, micro power plants, etc.

The RCF35 is a compact relay designed to monitor frequency variations on 50 Hz, 60 Hz
, and 400 Hz power grids. It enables under- and over-frequency monitoring through the adjustment of two independent thresholds. A 3-digit LED display shows the grid frequency.

DC RELAY

Downloads:

dsl35lcc

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• DC or DC+AC control, range from +/- 1A to +/-125 A DC
• 1 changeover relay output; alarm configurable via front panel (threshold, delay, hysteresis)
• 1000-count LED current display
• Applications: solar systems, batteries, motor monitoring


Description:
The DSL35LCC is primarily designed for monitoring DC current (
). With the TRMS option, the product can also be used for measuring complex AC+DC currents.

AC RELAY

Downloads:

dsl35lca

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Current control relays up to 500 A rms at 50 Hz / 60 Hz / 400 Hz
Effective measurement for all types of signals: PWM; Phase angle modulation, Pulse trains, signals with high harmonic content
• DSL35LCA peak detection
• Measurement input via split-core transformer
• 1000-point LED measurement display
• 2 configurable thresholds on the front panel: Threshold, delay, hysteresis
• 2 10A changeover relay outputs
• DIN rail mounting
The DSL35LCA is a compact current measurement relay with thresholds, providing a cost-effective solution
for monitoring or protection issues.
The 3-digit LED display allows for precise threshold adjustment and quick measurement verification.

THRESHOLD RELAY, THRESHOLD DETECTOR FOR ANALOG SIGNALS

Downloads:

  • manual-DSL35L-eng.pdf
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2
  • manual-DSL35L-eng.pdf
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2

dsl35l

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Download the complete fact sheet
DOWNLOAD THE COMPLETE DATA SHEET
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PTC protection relays
• Process and temperature inputs: Volts, mA, potentiometer, NTC, PTC for coil and winding protection in accordance with DIN 44082
• 1000-point LED measurement display
• Internal or external threshold adjustable via pushbutton or analog signal (4..20mA/0..10V)
• 1 or 2 10A changeover relay outputs
• Applications
thermal protection relays, thermostats
threshold relays for 4…20mA loops

The DSL35L is a compact relay that allows you to set a threshold—or, with th
, two independent thresholds—for an analog input signal, providing a cost-effective solution for control or protection applications.
The measured value is displayed on a 3-digit LED display.

UNIVERSAL ANALOG THRESHOLD RELAY

Downloads:

  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2
  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2

dsl35

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Download the complete fact sheet
DOWNLOAD THE COMPLETE DATA SHEET
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THRESHOLD DETECTOR
• Process and temperature inputs: Volts, mV, uA, mA, AC or DC Amps, RMS, TRMS
Sensor power supply: 4–20 mA Potentiometer, frequency, Ohms Thermocouple, PT100, NTC, CTP, …
NAMUR proximity sensor (IEC 60497-5-6) Capacitive divider, strain gauge
• Special inputs Sum, difference, or average of 2 setpoint inputs
Setpoint potentiometer (multi-turn or single-turn with screw) Selection of max. or min. value across 2 inputs

• DSL1-35: 1-threshold / 1-changeover relay version
• DSL2-35: 2-threshold / 2-changeover relay version
• DSL3-65: 3-threshold / 3-changeover relay version
• DSL4-65: 4-threshold / 4-changeover relay version

• Positive or negative safety (selected via internal switch)
• Internal setpoint (potentiometer) or external setpoint (voltage, potentiometer)

The DSL35 allows you to set one or two independent thresholds for any type of analog signal; it is designed
for protection applications or simple on/off control.

4–20 mA ANALOG THRESHOLD RELAY

Downloads:

dsl1-35ma-sil

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DOWNLOAD THE COMPLETE DATA SHEET
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High level of functional safety
• 4–20 mA current input
• 1 threshold adjustable via a multi-turn potentiometer and open-loop detection
• Positive safety: Relays activated below the threshold
• 2 electromechanical changeover contact outputs Independent relays
• Functional safety level: SIL2 / SIL3 according to IEC 61508
The DSL1-35mA-SIL threshold detector is specially designed for safety applications;
its analog design ensures a high level of reliability as well as complete control
over failure modes. It is naturally suited for protection applications.

ANALOG THRESHOLD DETECTOR

Downloads:

dsl1-35ma-nuc

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Very high level of operational reliability
• Active or passive 4–20 mA current input with or without sensor power supply
• 1 threshold adjustable via multi-turn potentiometer and open-loop detection
• Safety mode selectable via DIP switch; relays activated above or below the threshold
• 2 outputs, electromechanical changeover contact Independent relay
• Traceability of internal components provided with the list of manufacturing operations and individual inspection sheet (Nuclear application)
• Functional safety level: SIL2 / SIL3 according to IEC 61508

The DSL1-35mA-NUC threshold detector is specifically designed for safety applications;
its analog design ensures a high level of reliability and complete control
over failure modes. It is ideally suited for use in protection applications.

PHASE CONTROL

Downloads:

  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2
  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2

dop23

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DOWNLOAD THE COMPLETE DATA SHEET
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• Phase sequence monitoring for a three-phase system Mains frequency: 50 Hz, 60 Hz, and 400 Hz (40 Hz–500 Hz)
• Status LEDs – Normal, reverse, and missing phase
• DOP23: Phase sequence OK, phase presence OK
• DOP23L: Phase presence OK

The DOP23 relay enables phase sequence control for three-phase electrical systems that can be moved (
) and where the direction of rotation is critical (e.g., pumps, saws, and drills). A contact indicating the correct phase se
e and the presence of all phases is available to authorize system startup. LEDs on the front panel facilitate diagnostics (normal, reverse, or missing phase).

INTENSITY SENSOR

Downloads:

  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2
  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2

dil36

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Download the complete fact sheet
DOWNLOAD THE COMPLETE DATA SHEET
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• Non-intrusive current detection Detection threshold: 0.1A; current rating > 200A
• Remote current sensor (open-loop) • 1 output: 24Vdc, 200mA
Open-loop current sensor type: Tio d8 mA
• DIN rail mounting
• Application
Non-intrusive detection of machine or system startup, Radiology Equipment
• Universal power supply 20–265 V AC/DC

The DIL36 is a fixed-threshold relay for alternating current, providing a cost-effective solution
for detecting when equipment is turned on or off. Its normally closed sensor allows for safe operation
without modifying the existing electrical circuit; the output can be used to directly control
indicator lights or a relay.

ALTERNATING CURRENT DETECTOR

Downloads:

  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2
  • Manual
  • Additional file 1
  • Additional file 2
  • Supplementary file 3
  • Supplementary file 4
  • Supplementary file 5
  • Supplementary file 6
  • Supplementary file 7
  • Supplementary file 8
  • Direct link 1
  • Direct link 2

dil25ca

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Download the complete fact sheet
DOWNLOAD THE COMPLETE DATA SHEET
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• Non-intrusive analog current detection
Detection threshold: 0.2 Aac to 500 Aac, predefined by the sensor

• Tios-type remote current sensor (open type), passage diameter: 8, 12, 17, 24, and 36 mm
The detector threshold is preset in the sensor; no adjustment is necessary

• Solid-state relay output: normally open contact, rated for 60 V and 0.5 A, with a delay time of 0.025 to 60 seconds

• Application
Commissioning detection
Overcurrent detection, test bench

• DIL25CA: 24 VDC power supply
• DIL25CA-A: self-powered
• DIN rail mounting

The DIL25CA is a threshold relay for alternating current, providing a cost-effective solution for detecting overcurrent or for commissioning equipment
. Its open-contact sensor allows for safe,
-based operation without modifying the existing electrical circuit; the sensor determines the detection threshold.
The potential-free solid-state relay output allows for direct control of an indicator light, a relay
, or a PLC input.

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