GFR Series
- 1 Pole+N, D Trip, 10 mA
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. Short Circuit Withstand rating is 10kA.
Ordering Information
Rated
Current
5.0A
6.0A
8.0A
10A
12A
13A
15A
16A
20A
25A
Number of Poles
Voltage Rating (maximum)
Ground Fault Sensitivity Level
Short Circuit Withstand Rating
Rated Frequency
Trip Characteristic
Cable Size & Tightening Torque
Ground Fault Relay
with Overload Protection
UL 1077
Type/
Cat. No.
GFR2D05010
GFR2D06010
GFR2D08010
GFR2D10010
GFR2D12010
GFR2D13010
GFR2D15010
GFR2D16010
GFR2D20010
GFR2D25010
Rated
Voltage
277V AC
277V AC
277V AC
277V AC
277V AC
277V AC
277V AC
277V AC
277V AC
277V AC
7200
3600
2400
1200
600
480
360
240
120
60
40
20
Ground Fault Sensing
& Relaying Equipment
E483493
GFL Series RCBO
Overload Trip Curves
Characteristics B, C, D
Technical Specification
1+N
277V AC
10 mA
30 kA
50/60Hz
D
Stranded Wire: 16 - 3 AWG (1.5 mm
2
- 25 mm
2
) @ 17.5 lb-in (2.0 Nm)
16 - 10 AWG (1.5 mm
2
- 5.5 mm
2
) @ 17.5 lb-in (2.0 Nm)
Solid Wire:
18 - 16 AWG (1 mm
2
- 1.5 mm
2
) @ 25 lb-in (2.8 Nm)
6000 Switching Operations
10000 Switching Operations
t(s)
time
Switch
10
5
Electrical Life
Mechanical Life
Dimensions
(to convert to inches multply by 0.03937)
1
0.5
85mm
45mm
35 mm
0.1
0.05
B
C
D
0.01
71mm
60mm
44mm
1
1.05 1.35
2
3
4
5
6
7 8 9 10
12 14 16 18 20
Rated current multiple
xI
n
GFR Series RCBO
Ground Fault Trip Curve
t(s)
17.5mm
0.5
0.4
0.2
0.3
0.15
0.1
0.05
0.04
0.03
0.02
0.015
0.01
0.005
0.5
1
0.85 1.15
5
Weight
217 g
GFR Series RCBO Short Circuit Withstand Rating
V
1+N Pole
277V AC
I
≤20A
>20A
IR
10kA
10kA
Backup
None
Class J Fuse 250A or lower
Altech L Series Branch Circuit Breaker
Altech R Series Supplementary Protector
I
∆
I
∆
n
1
35 Royal Road • Flemington, NJ 08822-6000 • t 908-806-9400 • f 908-806-9490 • www.altechcorp.com
GFR Series -
1 Pole+N, D Trip, 10 mA
Applicable voltage systems and wiring examples.
L1
GFR2
277 V
480 V
480 V
L2
277 V
480 V
N
277 V
L3
L1
240 V
400 V
400 V
L2
240 V
400 V
N
240 V
GFR2
Ground Fault Relay
with Overload Protection
LOAD
UL 1077
L3
L1
120 V
208 V
208 V
L2
120 V
208 V
N
120 V
GFR2
L3
GFR2
120 V
240 V
L2
LOAD
1
LOAD
Wiring a hot leg/phase to
N terminal is not permitted.
120 V
L1
NOTE:
2
LOAD
LINE
N
N
N
2
35 Royal Road • Flemington, NJ 08822-6000 • t 908-806-9400 • f 908-806-9490 • www.altechcorp.com
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