9 10 12 14 16 18 20 1 2 3 4 5 6 7 8 GFR Series - 3 Pole+N, B Trip, 300 mA 480Y/277V AC Ground Fault Relay with Overload Protection (RCBO) The GFR Series is a combined Equipment Ground Fault Relay and Supplementary Protector (RCBO), featuring dual pole switching (live and neutral) and designed to provide protection against overloads and AC ground faults (residual current faults) as well as pulsating DC ground faults. Ordering Information Rated Type/ Rated Current Cat. No. Voltage 5.0A GFR4B05300 480Y/277V AC Ground Fault Sensing & Relaying Equipment 6.0A GFR4B06300 480Y/277V AC E483493 8.0A GFR4B08300 480Y/277V AC 10A GFR4B10300 480Y/277V AC 12A GFR4B12300 480Y/277V AC GFR Series RCBO 13A GFR4B13300 480Y/277V AC Overload Trip Curves 15A GFR4B15300 480Y/277V AC Characteristics B, C, D 7200 16A GFR4B16300 480Y/277V AC 3600 20A GFR4B20300 480Y/277V AC 2400 25A GFR4B25300 480Y/277V AC 1200 600 30A GFR4B30300 480Y/277V AC 480 360 32A GFR4B32300 480Y/277V AC 240 120 35A GFR4B35300 480Y/277V AC 60 40A GFR4B40300 480Y/277V AC 40 20 Technical Specification 10 Number of Poles 3+N 5 Voltage Rating (maximum) 480Y/277V AC Ground Fault Sensitivity Level 300 mA 1 Short Circuit Withstand Rating 10 kA Rated Frequency 50/60Hz 0.5 Trip Characteristic B 2 2 Cable Size & Tightening Torque Stranded Wire: 16 - 3 AWG (1.5 mm - 25 mm ) 17.5 lb-in (2.0 Nm) B C D 2 2 0.1 16 - 10 AWG (1.5 mm - 5.5 mm ) 17.5 lb-in (2.0 Nm) Solid Wire: 2 2 18 - 16 AWG (1 mm - 1.5 mm ) 25 lb-in (2.8 Nm) 0.05 Electrical Life 6000 Switching Operations Mechanical Life 10000 Switching Operations 0.01 Dimensions (to convert to inches multply by 0.03937) 1.05 1.35 Rated current multiple x I 85mm n 45mm 70 mm GFR Series RCBO Ground Fault Trip Curve 0.5 0.4 0.2 0.3 0.15 0.1 0.05 0.04 0.03 Weight 217 g 0.02 0.015 0.01 GFR Series RCBO Short Circuit Withstand Rating V I IR Backup 0.005 0.5 1 5 0.85 1.15 20A 10kA None I 3+N Pole Class J Fuse 250A or lower In 480Y/277V AC >20A 10kA Altech L Series Branch Circuit Breaker Altech R Series Supplementary Protector 1 35 Royal Road Flemington, NJ 08822-6000 t 908-806-9400 f 908-806-9490 www.altechcorp.com 1 3 5 N LINE N 6 4 2 UL 1077 Ground Fault Relay with Overload Protection 71mm 60mm 44mm t(s) Switch off time t(s)UL 1077 Ground Fault Relay with Overload Protection GFR Series - 3 Pole+N, B Trip, 300 mA Applicable voltage systems and wiring examples. L1 GFR4 277 V 480 V 480 V L2 277 V 480 V N 277 V L3 L1 GFR4 120 V 208 V 208 V L2 120 V 208 V N 120 V L3 L3 480 V 480 V GFR L2 480 V * Jumper from terminal 2 to N L1 L3 277 V 277 V L2 277 V * Jumper from terminal 4 to N L1 * Either jumper connection can be used for both voltage configurations. 2 35 Royal Road Flemington, NJ 08822-6000 t 908-806-9400 f 908-806-9490 www.altechcorp.com LOAD LOAD LOAD LOAD 1 3 5 N LINE 1 3 5 N 1 3 5 N LINE LINE 1 3 5 N LINE N 4 6 2 N 6 N 4 6 4 2 2 N 6 4 2