About Gas Discharge Tubes - GDTs / Gas Plasma Arrestors

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors

Gas Discharge Tubes (GDTs) or Gas Plasma Arrestors protect circuits from transient voltages caused by lightning, switching, and other sources. They allow the passage of AC currents but act as a short circuit for high-energy transients. Essentially, they provide a conductive path for the discharge of high voltage transients, while preserving the normal DC voltage. GDTs are low-cost and provide a simple and effective solution for protecting sensitive electronic equipment. They are an essential component of any system which is subject to high voltage surges or transients, such as in lightning storms or when high power is switched on or off. GDTs are typically constructed using a glass or ceramic tube, containing two electrodes. The gas inside is usually a mixture of noble gases such as argon, neon, and xenon. When a high voltage transient occurs, the gap between the electrodes breaks down and a low impedance path is formed which allows the transient to be discharged to ground. GDTs provide a range of advantages such as high dielectric strength, low operating voltage, and low leakage current.

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Image	Stock Code(▲▼)	Description	Manufacturer	Availability ⓘ (▲▼)	Price(AUD) (Ex. GST)(▲▼)	Enter Qty	Peak Pulse Current	DC Breakover Voltage (Nominal)	Number of Electrodes	Series	Termination Style	Failsafe Protection Y/N	Packaging	Diameter	DC Sparkover	Length	Minimum Operating Temperature	Maximum Operating Temperature

SPA931

Surge arrestor; Type 1+2; Poles: 4; 50kA; DIN; IP20; 1.5kV
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Hager

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 363.2709

Multiples of: 1

FDB-2 24-M

Surge arrestor; Type 2+3; Poles: 2; 22VAC; M20x1.5; -20÷70°C; 32VDC
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 364.5374

Multiples of: 1

FDB-3 24-M

Surge arrestor; Type 2+3; Poles: 3; 22VAC; M20x1.5; -20÷70°C; 32VDC
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 364.5374

Multiples of: 1

FDB-2 24-N

Surge arrestor; Type 2+3; Poles: 2; 22VAC; 1/2\ NPT; -20÷70°C
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 364.5374

Multiples of: 1

FDB-3 24-N

Surge arrestor; Type 2+3; Poles: 3; 22VAC; 1/2\ NPT; -20÷70°C
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 364.5374

Multiples of: 1

MCD 50-B 0-OS

Surge arrestor; Type 1+2; Poles: 1; 255VAC; socket; -40÷80°C; IP20
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 370.5757

Multiples of: 1

SPN900R

Surge arrestor; Type 1+2; Poles: 3; 37.5kA; DIN; IP20; 1.5kV
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Hager

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 376.5021

Multiples of: 1

MCD 50-B-320

Surge arrestor; Type 1; Poles: 1; 320VAC; DIN; -40÷80°C; IP20; 50kA
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 381.7025

Multiples of: 1

MCD 50-B-OS

Surge arrestor; Type 1+2; Poles: 1; 255VAC; DIN; -40÷80°C; IP20
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027

March 2027
	S	M	T	W	T	F	S
10	28	1	2	3	4	5	6
11	7	8	9	10	11	12	13
12	14	15	16	17	18	19	20
13	21	22	23	24	25	26	27
14	28	29	30	31	1	2	3
15	4	5	6	7	8	9	10

AUD 394.4802

Multiples of: 1

V-PV-T2-1500

Surge arrestor; Type 2; Poles: 3; 20kA; DIN; -40÷80°C; IP20; 1500VDC
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

OBO BETTERMANN

0
6 to 16 Weeks

March 2027