Kyongbo Electric Induction Over Current Relay with Instantaneous Unit GCO-CI (Normally Open Contact)

Operation and application are the same as type GCO-C with an added instantaneous trip unit for generator, transmission line, distribution line and motor protection.

Key features

Instantaneous trip unit (IIT) 20-80 A
Inverse and very inverse time characteristics
ICS coil options: DC current 0.2/2.0 A, 0.5/2.0 A, 1.0 A; DC voltage 24/110/125 V; AC current 0.5/1.0/2.0 A; AC voltage 110/220 V

Specifications

Frequency	60 Hz (standard), 50 Hz (option)
Case Color	Munsell N1.5

GCO-CIⅢ4		Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅢ39		Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅢ3		Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅢ2		Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅡ4		Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅡ39		Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅡ3		Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅡ2		Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
GCO-CIⅢD4		Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅢD39		Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅢD3		Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅢD2		Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅡD4		Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅡD39		Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅡD3		Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
GCO-CIⅡD2		Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg

Induction Protective RelaysKyongbo Electric

16 product codes available in this family

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Kyongbo Electric Induction Over Current Relay with Instantaneous Unit GCO-CI (Normally Open Contact)

Brand Kyongbo Electric·Induction Protective Relays

Available part numbers (16)

GCO-CIⅢ4, GCO-CIⅢ39, GCO-CIⅢ3, GCO-CIⅢ2, GCO-CIⅡ4, GCO-CIⅡ39, GCO-CIⅡ3, GCO-CIⅡ2, GCO-CIⅢD4, GCO-CIⅢD39 + 6 more — see full table ↓

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Product codes & specifications

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	Product code	Spec
	GCO-CIⅢ4	Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅢ39	Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅢ3	Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅢ2	Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅡ4	Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅡ39	Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅡ3	Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅡ2	Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 1.0 A \| Case: Non-drawout \| Weight: approx. 3 kg
	GCO-CIⅢD4	Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅢD39	Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅢD3	Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅢD2	Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅡD4	Tap Range: 4-12 A \| Taps: 4, 5, 6, 7, 8, 10, 12 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅡD39	Tap Range: 3-9 A \| Taps: 3, 4, 5, 6, 7, 8, 9 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅡD3	Tap Range: 3-8 A \| Taps: 3, 4, 5, 6, 8 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg
	GCO-CIⅡD2	Tap Range: 2-6 A \| Taps: 2, 3, 4, 5, 6 A \| Characteristic: Very inverse \| Rating: 5 A \| IIT Unit: 20-80 A \| ICS Unit: DC 0.5/2.0 A \| Case: Drawout \| Weight: approx. 4 kg

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Kyongbo Electric Induction Over Current Relay with Instantaneous Unit GCO-CI (Normally Open Contact)