TVS - Surge Protection Devices (SPDs)

Product List

1075 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Type	Form	Number of Poles	Voltage - Continuous Operating (Max) (MCOV)	Current - Discharge (Nom) (8/20µS)	Current - Discharge (Max) (8/20µS)	Current - Short Circuit Rating (SCRR)	Voltage - Protection Rating (VPR)	Voltage - Protection Level (VP) (2416)	Operating Temperature	Features	Mounting Type	Approval Agency
LSP10277S LIGHTING SURGE PROTECT 277V SCRW Littelfuse Inc.	9	$18.74	LSP	Tray	Active	Type 2	Module Only	1	320VAC	10 kA	20 kA	-	-	1.4 kV	-45°C ~ 85°C	Thermally Protected	Screw	CE, cURus, UL
BSP3-277-20KA LIGHTING SURGE PROTECT 100-277V Thomas Research Products	40	$19.95	BSP3	Box	Active	-	Module Only	3	320VAC, 420VDC	20 kA	20 kA	-	-	-	-	-	Free Hanging	CE, cURus, UL
FSP3-277-20KA LIGHTING SURGE PROTECT 100-277V Thomas Research Products	14	$35.17	FSP3	Box	Active	-	-	3	320VAC, 420VDC	20 kA	20 kA	-	-	-	-40°C ~ 85°C	-	Free Hanging	cURus, UL
2798844 SURGE PROTECTION CONN TYPE 2 Phoenix Contact	6	$105.17		Bulk	Active	Type 2	Module Only	1	275VAC	20 kA	40 kA	25 kA	-	1.35 kV	-40°C ~ 80°C	-	Base Mount	CB, CCA, CSA, cUL, cULus, EAC, GL, KEMA-KEUR, OVE, UL
1250-2S-120 SPD AC 2W+G 120VAC Bourns Inc.	5	$189.24	1250	Bulk	Active	Type 2, Type 4	Base + Module	2	150VAC	20 kA	50 kA	100 kA	700 V	900 V	-50°C ~ 85°C	Remote Signaling Contacts, Thermally Protected	DIN Rail	CE, CSA, UR
1250-2S-230 SPD AC 2W+G 230VAC Bourns Inc.	6	$190.86	1250	Bulk	Active	Type 2, Type 4	Base + Module	2	275VAC	20 kA	50 kA	100 kA	1 kV	1.25 kV	-50°C ~ 85°C	Remote Signaling Contacts, Thermally Protected	DIN Rail	CE, CSA, UR
SPD2-350-3P0-R SPD MOD 3P+0 350VAC TYPE 1+2 Littelfuse Inc.	2	$200.72	SPD2 3P+0	Bulk	Active	Type 1, Type 2	Base + Module	3	350VAC	20 kA	50 kA	200 kA	1 kV	1.75 kV	-40°C ~ 80°C	Remote Signaling Contacts, Thermally Protected	DIN Rail	CE, cURus, UL, VDE
SPD2-300-4P0-R SPD MOD 4P+0 300VAC TYPE 1+2 Littelfuse Inc.	2	$271.62	SPD2 4+0	Bulk	Active	Type 1, Type 2	Base + Module	4	300VAC	20 kA	50 kA	150 kA	900 V	1.5 kV	-40°C ~ 80°C	Remote Signaling Contacts, Thermally Protected	DIN Rail	CE, cURus, UL, VDE
LSP05G277S LIGHTING SURGE PROTECT 277V SCRW Littelfuse Inc.	42	$11.60	LSP	Bulk	Active	Type 2	Module Only	1	320VAC	5 kA	10 kA	-	-	-	-45°C ~ 85°C	Thermally Protected	Screw	cURus, UL
LSP05G240SX3333 LIGHTING SURGE PROTECT 240V SCRW Littelfuse Inc.	59	$11.71	LSP	Tray	Active	Type 2	Module Only	1	275VAC	5 kA	10 kA	-	-	-	-45°C ~ 85°C	Thermally Protected	Screw	cURus, UL
SSP3-480 LIGHT PROTECTOR SURGE PROT 480V Thomas Research Products	44	$14.96	SSP3	Bulk	Active	Type 5	Module Only	1	550VAC, 745VDC	5 kA	20 kA	-	-	-	-35°C ~ 85°C	-	-	cURus, UL
SSP3-277 LIGHT PROTECTOR SURGE PROT 277V Thomas Research Products	7	$14.94	SSP3	Bulk	Active	Type 5	Module Only	1	320VAC, 420VDC	5 kA	20 kA	-	-	-	-35°C ~ 85°C	-	-	cURus, UL
LSP05120P LIGHTING SURGE PROTECT 120V SCRW Littelfuse Inc.	42	$16.08	LSP	Tray	Active	Type 2, Type 4	Module Only	1	150VAC	5 kA	10 kA	-	-	800 V	-45°C ~ 85°C	Thermally Protected	Screw	CE, cURus, UL
LSP10480S LIGHTING SURGE PROTECT 480V SCRW Littelfuse Inc.	52	$18.47	LSP	Tray	Active	Type 2	Module Only	1	510VAC	10 kA	20 kA	-	-	2.1 kV	-45°C ~ 85°C	Thermally Protected	Screw	CE, cURus, UL
FSP3-480-20KA LIGHTING SURGE PROTECT 480V HLDR Thomas Research Products	22	$44.41	FSP3	Box	Active	-	-	3	550VAC, 745VDC	20 kA	20 kA	-	-	-	-40°C ~ 85°C	-	Free Hanging	cURus, UL
2807609 SURGE PROTECTION CONN TYPE2 Phoenix Contact	3	$104.46		Bulk	Active	Type 2	Module Only	2	600VAC	15 kA	30 kA	25 kA	-	2.7 kV	-40°C ~ 80°C	-	Base Mount	CB, CCA, CSA, cUL, cULus, GL, GOST, KEMA, OVE, UL
LSP05G240P LIGHTING SURGE PROTECT 240V SCRW Littelfuse Inc.	71	$11.19	LSP	Bulk	Active	Type 2	Module Only	1	275VAC	5 kA	10 kA	-	-	-	-45°C ~ 85°C	Thermally Protected	Screw	cURus, UL
LSP05GI277P LIGHTING SURGE PROTECT 277V SCRW Littelfuse Inc.	34	$14.27	LSP	Bulk	Active	Type 2, Type 3	Module Only	1	320VAC	5 kA	10 kA	-	-	2.4 kV	-40°C ~ 85°C	Thermally Protected	Screw	CE, cURus, KEMA-KEUR, UL
SPD-20-240P LIGHTING SURGE PROTECT 240V SCRW MEAN WELL USA Inc.	2	$19.66	SPD-20	Box	Active	-	-	2	300VAC	5 kA	20 kA	5 kA	1.5 kV	1.5 kV	-40°C ~ 70°C	-	Screw	CE, cURus, UL
LSP10GI277S LIGHTING SURGE PROTECT 277V SCRW Littelfuse Inc.	39	$19.61	LSP	Bulk	Active	Type 2	Module Only	1	320VAC	10 kA	20 kA	-	-	1.4 kV	-40°C ~ 85°C	Thermally Protected	Screw	UL

About Surge Protection Devices (SPDs)

What are Surge Protection Devices (SPDs)?

Surge Protection Devices (SPDs)

Surge Protection Devices (SPDs) are essential components in electrical systems designed to protect sensitive equipment from transient over-voltages, commonly known as surges. These surges can originate from various sources, such as lightning strikes, power outages, or switching operations, and can cause significant damage to electronic devices. SPDs work by diverting excess voltage away from the protected equipment, typically to the ground, thus ensuring that the voltage level remains within a safe range. The basic operating principle involves the use of components like metal oxide varistors (MOVs), gas discharge tubes (GDTs), or transient voltage suppressor diodes, which respond to over-voltage conditions by changing their impedance and shunting the excess energy away from the circuit.

Types of Surge Protection Devices (SPDs)

1. Metal Oxide Varistors (MOVs)

MOVs are widely used in SPDs due to their ability to handle high energy levels and fast response times. They consist of zinc oxide grains that provide a non-linear resistance, allowing them to clamp voltage spikes effectively. MOVs are typically used in applications where high energy absorption and cost-effectiveness are priorities.

2. Gas Discharge Tubes (GDTs)

GDTs are ideal for protecting against high-energy transients, such as those caused by lightning strikes. They operate by ionizing a gas within a sealed tube, creating a conductive path that diverts the surge current away from sensitive equipment. GDTs are known for their high surge current capacity and low capacitance, making them suitable for telecommunications and RF applications.

3. Transient Voltage Suppressor (TVS) Diodes

TVS diodes are semiconductor devices designed to protect against fast transients. They offer low clamping voltage and fast response times, making them suitable for protecting sensitive electronic circuits. TVS diodes are commonly used in data lines, automotive electronics, and consumer electronics where precision and speed are critical.

How to choose Surge Protection Devices (SPDs)?

When selecting SPDs, several key parameters should be considered to ensure optimal protection:

Voltage Rating: Ensure the SPD's voltage rating matches the system's operating voltage to prevent under or over-protection.
Surge Current Capacity: Choose an SPD with a surge current capacity that can handle the expected surge levels in your environment.
Response Time: Opt for SPDs with fast response times to ensure quick protection against transients.
Clamping Voltage: Select SPDs with a clamping voltage that is lower than the damage threshold of the equipment being protected.
Environmental Considerations: Consider factors such as temperature, humidity, and exposure to corrosive elements, which may affect SPD performance.

Evaluating product quality and reliability involves reviewing supplier certifications, testing standards, and customer reviews. Installation requirements, such as grounding and proximity to protected equipment, should also be considered to ensure effective protection.

Applications of Surge Protection Devices (SPDs)

1. Telecommunications

In the telecommunications industry, SPDs protect sensitive equipment such as base stations, routers, and switches from lightning-induced surges and power fluctuations. They ensure uninterrupted communication services by preventing equipment damage and data loss.

2. Industrial Automation

SPDs are crucial in industrial automation to safeguard control systems, sensors, and actuators from voltage spikes caused by switching operations or power grid disturbances. They help maintain operational efficiency and reduce downtime in manufacturing processes.

3. Renewable Energy Systems

In renewable energy applications, such as solar and wind power systems, SPDs protect inverters, converters, and monitoring equipment from surges caused by lightning or grid disturbances. This protection is vital for ensuring the longevity and reliability of renewable energy installations.

4. Data Centers

Data centers rely on SPDs to protect servers, storage devices, and networking equipment from power surges that could lead to data corruption or hardware failure. SPDs help maintain data integrity and prevent costly downtime in these critical environments.

5. Residential and Commercial Buildings

In residential and commercial settings, SPDs are used to protect appliances, HVAC systems, and electronic devices from surges caused by lightning strikes or utility switching. They provide peace of mind by reducing the risk of damage and extending the lifespan of electronic equipment.

TVS - Surge Protection Devices (SPDs)

Product List

LSP10277S

BSP3-277-20KA

FSP3-277-20KA

2798844

1250-2S-120

1250-2S-230

SPD2-350-3P0-R

SPD2-300-4P0-R

LSP05G277S

LSP05G240SX3333

SSP3-480

SSP3-277

LSP05120P

LSP10480S

FSP3-480-20KA

2807609

LSP05G240P

LSP05GI277P

SPD-20-240P

LSP10GI277S