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NK Technologies - AG Series, Ground Fault (Earth Leakage) Sensors with Mechanical Relay Output
   
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Ground Fault / Earth Leakage Sensors
AG Series, Ground Fault/Earth Leakage Sensors - Solid-State Relay Output
AG Series, Ground Fault/Earth Leakage Sensors - Mechanical Relay Output
AGL Series, Large Aperture Ground Fault Sensors
NK Technologies - AG Series, Ground Fault (Earth Leakage) Sensors with Mechanical Relay Output
 
AG Series Ground Fault Sensors help protect people, products, and processes from damage by ground fault conditions by monitoring all current-carrying conductors in grounded single- and three-phase delta or wye systems.

“Zero Sum” Operating Principle: In threephase delta and wye systems, under normal conditions current in the ‘hot’ leg of a two-wire load is equal in magnitude but opposite in sign to the current in the neutral leg. As a result, the electromagnetic fields surrounding these two conductors cancel, producing a “zero sum current.” As soon as current leaks to ground (fault condition) the two currents become imbalanced and a net magnetic field results. AG Series sensors monitor this field and trip alarm contacts when the leakage rises above setpoint.
NK Technologies AG Series with Mechanical Relay Output
Download Complete Specifications in .pdf Format
Applications :

Personnel Protection (typically 5mA)
  • Detects sensitive ground fault conditions, which may be injurious to personnel and processes.
  • Functions as sensor and alarm trigger when part of an overall ground fault protection system.

Equipment Protection (typically 10mA or 30mA)
For applications where personal protection is not the primary concern, higher setpoint capability helps eliminate nuiscance tripping while still providing adequate ground fault detection to protect machine electronics.

Regulatory
Meets requirements as stipulated by governmental and industrial regulatory groups for ground fault sensing.
 
AG Series with Mechanical Outputs are available in solid-core enclosures with a choice between a N.O. or N.C. SPST latching relay and a SPDT Form C relay with auto-reset. All mechanical models can be ordered with factory adjustable setpoint or with a “Tri-set” option, which provides three factory-set, field adjustable setpoints. A noise immunity option is available for applications in harsh EMI/RFI environments.
 
Features:

  • Broad Range of Options to Match Application Needs
    • N.O./N.C. solid-state switch or mechanical relay outputs.
    • Normally energized or normally de-energized contacts.
    • Noise Immunity option for use in EMI/RFI sensitive environments.
  • Setpoint Options Maximize Ease-of-Use
    • Field selectable 5mA, 10mA or 30mA setpoints on the AG3 “Tri-set” model makes user adjustments fast, sure and convenient.
    • Single factory calibrated setpoints available form 5mA to 950mA.
  • Compatible with Standard Equipment
    • Applicable on single- and three-phase systems.
    • ..Ideal for use with shunt trip breakers.
    • Magnetically isolated from monitored circuit and control power.
  • Agency Approved - UL, CE approved.
 
Download Complete Specifications in .pdf Format
Specifications:
Setpoint Range Factory calibrated models (specify when ordering):
  • AG1: 5–100mA (005–100)
  • AG2: 80–950mA (080–950)
TR3 “Tri-set” models (field jumper select): AG3: 5, 10, or 30mA
Output Solid-State Output Models Mechanical Output Models
Isolated Dry Contact Mechanical Relay
Output Rating
  • Solid-state AC Switch 1A @ 240VAC
  • Solid-state DC Switch 0.15A @ 30VAC
  • Auto Reset: SPDT Relay 1A @ 125VAC, 2A @ 30VDC
  • Latching: SPST Relay 1A @ 125VAC, 2A @ 30VDC
Off State Leakage
  • <10 micro Amps (N.O.)
  • <2.5mA (N.C.)
None
Response Time
  • 200ms @ 5% above trip point
  • 60ms @ 50% above trip point
    15ms @ 500% above trip point
Isolation Voltage 5,000 VAC (tested)
Frequency Range 50–400 Hz (monitored circuit)
Noise Immunity Option N/A
  • EMI/RFI Shielding
  • Power supply noise filtering
Power Supply
  • 120VAC (55–110% of nominal voltage)
  • 24VAC/VDC (+/- 20%)
  • Green LED = Power On indication
Loading 2VA Max.
Case UL94 V0 Flammability Rated
Environmental -4 to 122°F (-20 to 50°C), 0–95% RH, non-condensing
Listings UL 1053, Class 1 Recognized, CE
 
Ordering Information Download Complete Specifications in .pdf Format
Mechanical Relay Output Models
Model Description Output Power Supply Notes
Add part number AG1-NCR1-120-LA-SSS to your Quote. AG1-NCR1-120-LA-SSS 5–100mA, Latching N.C. 1A@120VAC, 2A@30VDC 120VAC Special Order Items-
SSS is the Setpoint. Indicate your desired setpoint 005 (5mA) through 100 (100mA) for the AG1 models and 005 (5mA) through 950 (950mA) for the AG2 models in the Special Shipping Instructions of your order.

Add an N at the end of any of the model numbers for the high-noise immunity option. Add $65.00 to the list price for this option.
Add part number AG1-NCR1-120-LA-SSSN to your Quote. AG1-NCR1-120-LA-SSSN
Add part number AG1-NOR1-120-LA-SSS to your Quote. AG1-NOR1-120-LA-SSS 5–100mA, Latching N.O. 1A@120VAC, 2A@30VDC 120VAC
Add part number AG1-NOR1-120-LA-SSSN to your Quote. AG1-NOR1-120-LA-SSSN
Add part number AG1-SDT1-120-DEN-SSS to your Quote. AG1-SDT1-120-DEN-SSS 5–100mA, Norm. De-Ener. SPDT 1A@120VAC, 2A@30VDC 120VAC
Add part number AG1-SDT1-120-DEN-SSSN to your Quote. AG1-SDT1-120-DEN-SSSN
Add part number AG1-SDT1-120-ENE-SSS to your Quote. AG1-SDT1-120-ENE-SSS 5–10 mA, Normally Energized SPDT 1A@120VAC, 2A@30VDC 120VAC
Add part number AG1-SDT1-120-ENE-SSSN to your Quote. AG1-SDT1-120-ENE-SSSN
Add part number AG1-NCR1-24U-LA-SSS to your Quote. AG1-NCR1-24U-LA-SSS 5–100mA, Latching N.C. 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG1-NCR1-24U-LA-SSSN to your Quote. AG1-NCR1-24U-LA-SSSN
Add part number AG1-NOR1-24U-LA-SSS to your Quote. AG1-NOR1-24U-LA-SSS 5–100mA, Latching N.O. 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG1-NOR1-24U-LA-SSSN to your Quote. AG1-NOR1-24U-LA-SSSN
Add part number AG1-SDT1-24U-DEN-SSS to your Quote. AG1-SDT1-24U-DEN-SSS 5–100mA, Norm. De-Ener. SPDT 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG1-SDT1-24U-DEN-SSSN to your Quote. AG1-SDT1-24U-DEN-SSSN
Add part number AG1-SDT1-24U-ENE-SSS to your Quote. AG1-SDT1-24U-ENE-SSS 5–100mA, Norm. Energized SPDT 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG1-SDT1-24U-ENE-SSSN to your Quote. AG1-SDT1-24U-ENE-SSSN
Add part number AG2-NCR1-120-LA-SSS to your Quote. AG2-NCR1-120-LA-SSS 80–950mA, Latching N.C. 1A@120VAC, 2A@30VDC 120VAC
Add part number AG2-NCR1-120-LA-SSSN to your Quote. AG2-NCR1-120-LA-SSSN
Add part number AG2-NOR1-120-LA-SSS to your Quote. AG2-NOR1-120-LA-SSS 80–950mA, Latching N.O. 1A@120VAC, 2A@30VDC 120VAC
Add part number AG2-NOR1-120-LA-SSSN to your Quote. AG2-NOR1-120-LA-SSSN
Add part number AG2-SDT1-120-DEN-SSS to your Quote. AG2-SDT1-120-DEN-SSS 80–950mA, Norm. De-Ener. SPDT 1A@120VAC, 2A@30VDC 120VAC
Add part number AG2-SDT1-120-DEN-SSSN to your Quote. AG2-SDT1-120-DEN-SSSN
Add part number AG2-SDT1-120-ENE-SSS to your Quote. AG2-SDT1-120-ENE-SSS 80–950mA, Norm. Energized SPDT 1A@120VAC, 2A@30VDC 120VAC
Add part number AG2-SDT1-120-ENE-SSSN to your Quote. AG2-SDT1-120-ENE-SSSN
Add part number AG2-NCR1-24U-LA-SSS to your Quote. AG2-NCR1-24U-LA-SSS 80–950mA, Latching N.C. 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG2-NCR1-24U-LA-SSSN to your Quote. AG2-NCR1-24U-LA-SSSN
Add part number AG2-NOR1-24U-LA-SSS to your Quote. AG2-NOR1-24U-LA-SSS 80–950mA, Latching N.O. 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG2-NOR1-24U-LA-SSSN to your Quote. AG2-NOR1-24U-LA-SSSN
Add part number AG2-SDT1-24U-DEN-SSS to your Quote. AG2-SDT1-24U-DEN-SSS 80–950mA, Norm. De-Ener. SPDT 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG2-SDT1-24U-DEN-SSSN to your Quote. AG2-SDT1-24U-DEN-SSSN
Add part number AG2-SDT1-24U-ENE-SSS to your Quote. AG2-SDT1-24U-ENE-SSS 80–950mA, Norm. Energized SPDT 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG2-SDT1-24U-ENE-SSSN to your Quote. AG2-SDT1-24U-ENE-SSSN
Add part number AG3-NCR1-120-LA-TR3 to your Quote. AG3-NCR1-120-LA-TR3 5, 10, 30mA, Latching N.C. 1A@120VAC, 2A@30VDC 120VAC Standard Items

Add an N at the end of any of the model numbers for the high-noise immunity option. Add $65.00 to the list price for this option.
Add part number AG3-NCR1-120-LA-TR3N to your Quote. AG3-NCR1-120-LA-TR3N
Add part number AG3-NOR1-120-LA-TR3 to your Quote. AG3-NOR1-120-LA-TR3 5, 10, 30 mA, Latching N.O. 1A@120VAC, 2A@30VDC 120VAC
Add part number AG3-NOR1-120-LA-TR3N to your Quote. AG3-NOR1-120-LA-TR3N
Add part number AG3-SDT1-120-DEN-TR3 to your Quote. AG3-SDT1-120-DEN-TR3 5, 10, 30mA, Norm. De-Ener. SPDT 1A@120VAC, 2A@30VDC 120VAC
Add part number AG3-SDT1-120-DEN-TR3N to your Quote. AG3-SDT1-120-DEN-TR3N
Add part number AG3-SDT1-120-ENE-TR3 to your Quote. AG3-SDT1-120-ENE-TR3 5, 10, 30mA, Norm. Energized SPDT 1A@120VAC, 2A@30VDC 120VAC
Add part number AG3-SDT1-120-ENE-TR3N to your Quote. AG3-SDT1-120-ENE-TR3N
Add part number AG3-NCR1-24U-LA-TR3 to your Quote. AG3-NCR1-24U-LA-TR3 5, 10, 30mA, Latching N.C. 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG3-NCR1-24U-LA-TR3N to your Quote. AG3-NCR1-24U-LA-TR3N
Add part number AG3-NOR1-24U-LA-TR3 to your Quote. AG3-NOR1-24U-LA-TR3 5, 10, 30mA, Latching N.O. 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG3-NOR1-24U-LA-TR3N to your Quote. AG3-NOR1-24U-LA-TR3N
Add part number AG3-SDT1-24U-DEN-TR3 to your Quote. AG3-SDT1-24U-DEN-TR3 5, 10, 30mA, Norm. De-Ener. SPDT 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG3-SDT1-24U-DEN-TR3N to your Quote. AG3-SDT1-24U-DEN-TR3N
Add part number AG3-SDT1-24U-ENE-TR3 to your Quote. AG3-SDT1-24U-ENE-TR3 5, 10, 30mA, Norm. Energized SPDT 1A@120VAC, 2A@30VDC 24V AC/DC
Add part number AG3-SDT1-24U-ENE-TR3N to your Quote. AG3-SDT1-24U-ENE-TR3N