CRMagnetics Catalog

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3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119
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The Professional
Energy Monitoring
Company
ISO 9001:2008QualityManagementSystem
M N TI 66
Relays, Switches & Sensors
D
Ground Fault Sensor
CR7310 Series
The CR7310 Series, Ground Fault Sensor provides a reliable
and cost effective method for sensing ground faults. The cur-
rent-carrying wires are routed through the opening extending
from the top of the case. When ground current reaches the
level set by the trip point adjustment, the relay trips, illuminates
the tripped LED and provides an output signal. A precision
voltage reference circuit ensures a highly repeatable trip point.
The Sensor is rated as a Class 1 device.
OUTPUT OPTIONS
The Relay is available with three different ouput
configurations, electromechanical relay, op-
toisolated NPN transistor or zero-crossing op-
toisolated triac. Specify desired selection in part
number.
DC SWITCHING (-NPN)
Vce (full off): 30 VDC max.
Isink (full on): 120 mADC max.@ rated full-on
Vce (full on): 1.5 VDC @ 120 mADC Isink
Off state leakage current: 5ua @ 30 VDC
(typical)
Terminals: 21/4” Male Q C
RELAY (-ELR)
Arrangement: 1 Form C (SPDT)
Contact Material: Silver-cadmium oxide
Terminals: 31/4” Male QC
Mechanical Life: 10 million operations,
typ.@ rated load
Electrical Life: 100,000 operations,
typ. @ rated load
Initial Contact Resistance:
50 milliohms max. @ 500 mA, 12 VDC
Contact Rating: UL508/873 & CSA
AC SWITCHING (-TRC)
Off state voltage: 240 VAC RMS max.
Minimum switch voltage: 24 VAC RMS
On state current: 500 mA RMS max. continuous
Switching mode: Zero crossing
Off state leakage: 60 ua @ 240 VAC max.
Terminals: 2 @ 1/4” Male QC
E211244
VOLTAGE LOAD TYPE
240 VAC
240 VAC
N.O. CONTACT N.C. CONTACT
Resistive
Motor
20A
2HP
10A
1/2 HP
125 VAC
28 VDC
Motor
Resistive
1HP
20A
1/4 HP
10A
Applications
Monitor Electrical Heater Elements
Sense Motor Over/Under Loads
Detect Lamp burn-out
Indicate Phase Loss
Features
Variable Trip Point and Time Delay
Monitors Currents from 10mAAC to 100 AAC Amps
Electrical Isolation Between Circuits
Output Relay Rated up to 20 Amps
LED Trip Status Indicator
Dead Band Prevents Relay Chatter
Calibrated Dial Option Available
External Current Transformers Available
Specifications
Mounting:
3/16” dia. clearance holes on 115/16” by 215/16”centers
Environmental:
Operating Temperature: -30° C to +60° C
Storage Temperature: -55° C to +85° C
Power-On Delay: 100 MS MAX
Hysteresis: 5% Max.
Input Supply Power:
Typical 80mA Max 100mA
Sensed Current:
Max. Continuous: 200% Full Scale
Frequency: 60-400 Hz *
*All specifications for operation at 60 Hz only
Altitude: 2000 meters max.
(Contact factory for High Altitude applications)
Weight 0.5 LBS.
Regulatory Agencies