⚠️ This listing is for trip range 0.01 – 0.12 A needs Ni core sensor
For other ranges, see all models.
Build Your GFR2. Tailored for Your Application.
The Skymatic GFR2 series was custom-engineered for use in a Canadian nuclear station—and it’s still protecting mission-critical equipment in that facility today. Built in the Greater Toronto Area and CSA approved, the GFR2 gives you the flexibility to tailor your ground fault relay to match your specific application.
This configurable model allows you to choose from multiple output types and time delays, making it a perfect fit for OEMs, panel builders, utilities, and industrial operations that demand precision and reliability.
This relay requires a compatible current transformer (CT) for proper operation. Browse our ANSI-rated CTs here.
📄 Download GFR2 Manual (PDF)
🧩 Configure Your GFR2
Model Format: GFR2-xyzq
Where each letter represents one selection:
| Parameter |
Options |
|
x = Trip Range |
A: 5–50 mA (10 steps)
B: 5–100 mA
C: 10–100 mA
D: 10–200 mA
E: 20–200 mA
F: 50–500 mA
G: 100–1000 mA
H: 0.2–2 A
K: 10–100 mA (most common) |
|
y = Output Type |
M: 1 Form A
N: 1 Form A + 1 Form B (default)
P: 2 Form A
Q: 2 Form A + 1 Form B
R: 2 Form A + 2 Form B |
|
z = Time Delay |
O: Fixed 100 ms
T: Selectable (0.1 to 1 s)
U: Selectable (0.1 to 5 s) |
|
q = Sensor Input |
0: 1000:1 ZCT
1: 500:1
2: 2000:1
3: 400:1
4: 200:1
5: 100:1 |
📊 Technical Specifications
| Feature |
Specification |
| Trip Current Range |
Based on selection (A–K), 5–2000 mA |
| Output Relay |
Based on selection (M–R), Form A/B combinations |
| Time Delay |
Fixed or selectable (up to 5 seconds) |
| Sensor Input |
Compatible with 100:1 to 2000:1 CTs |
| Supply Voltage |
120 V AC or 24 V DC |
| Mounting Style |
DIN rail |
| Enclosure |
Standard track-mount DIN housing, CSA approved |
| Dimensions |
2.75" x 4.4" x 3.0" |
| Weight |
220 g |
| Operating Temperature |
–10°C to +60°C |
| Certifications |
CSA-certified, Made in Canada |
Looking for Matching Current Transformers?
GFR2 ground fault relays require properly sized CTs—solid-core or split-core.
We stock a full range of Current Transformers for control panels, switchgear, and protection systems.
📦 Fast shipping across Canada
💰 Always priced below the competition (with help from AI)
🔧 Need help selecting the right configuration?
Call us at 416-742-4448 or contact us here. We’ll guide you through the selection process or help match it to your existing system.
