GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay – Duncan Instruments Canada Ltd
GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay
GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay
GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay
GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay

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This is a precision instrument. If you’re unsure which model fits your application or need purchasing documentation, just ask — we’re happy to help.

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Duncan Instruments calibrates and supports the GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay right here in Canada. Whether you need annual certification, repairs, or help interpreting your test results — our expert technicians are ready to help.

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GFR2N 2.5 ~ 7.50 A Configurable Ground Fault Protection Relay

$ 318.00 CAD Sale

⚠️ This listing is for trip range 2.5 – 7.5 A 
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.

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🔧 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.