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Surge Protection Devices (SPDs)
Littelfuse's surge protection devices provide high-transient voltage protection in a compact, multi-layered metal oxide varistor (MOV) structure
Littelfuse's SPDs provide equipment protection from transient overvoltage events lasting microseconds. By limiting the overvoltage to the equipment during these events, costly damage and downtime can be mitigated.
The NEMA-style SPDN series for external panel mount is available for 120 V to 480 V nominal voltage sub-distribution board applications.
Features
- Increased protection and design flexibility
- Prevents unsafe conditions that may cause false switching, component damage, or failure (SPDN A only)
- Ensures low-residual voltage during high-energy surge events and higher nominal discharge current to prevent disruption, downtime, and degradation or damage to equipment
- Provides more high-transient voltage protection in a compact, multi-layered MOV structure
- More direct modes of protection in a smaller package
- UL 1283 filtering slows and attenuates or reduces the very fast rate of voltage rise (dv/dt) (SPDN-A only)
- Capability to clamp and withstand high-energy transients
- Stacked MOV design
- Installs on the load or line side of the circuit breaker (SPDN-A on load side only)
Surge Protective Devices
| Image | Manufacturer Part Number | Description | Type | Voltage - Continuous Operating (Max) (MCOV) | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|---|
 | SPDN-D120-1P | SPD TYPE 1 180V MCOV 1 POLE | Type 1 | 180V | 2 - Immediate | $167.14 | View Details | |
 | SPDN-D240-1P | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 1 - Immediate | $160.60 | View Details | |
 | SPDN-D120-2S | SPD TYPE 1 180V MCOV 1 POLE | Type 1 | 180V | 0 - Immediate | See Page for Pricing | View Details | |
 | SPDN-D240-2S | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 2 - Immediate | $186.26 | View Details | |
 | SPDN-D277-3Y | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 1 - Immediate | $182.97 | View Details | |
 | SPDN-D120-3Y | SPD TYPE 1 150V MCOV 1 POLE | Type 1 | 150V | 1 - Immediate | $191.02 | View Details | |
 | SPDN-C240-1P | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 2 - Immediate | $273.07 | View Details | |
 | SPDN-C120-1P | SPD TYPE 1 180V MCOV 1 POLE | Type 1 | 180V | 2 - Immediate | $273.07 | View Details | |
 | SPDN-C120-2S | SPD TYPE 1 180V MCOV 1 POLE | Type 1 | 180V | 2 - Immediate | $316.42 | View Details | |
 | SPDN-B240-1P | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 2 - Immediate | $355.43 | View Details | |
 | SPDN-B120-1P | SPD TYPE 1 180V MCOV 1 POLE | Type 1 | 180V | 2 - Immediate | $355.43 | View Details | |
 | SPDN-C480-3D | SPD TYPE 1 550V MCOV 1 POLE | Type 1 | 550V | 2 - Immediate | $359.76 | View Details | |
 | SPDN-C240-3D | SPD TYPE 1 275V MCOV 1 POLE | Type 1 | 275V | 2 - Immediate | $378.84 | View Details | |
 | SPDN-C120-3Y | SPD TYPE 1 150V MCOV 1 POLE | Type 1 | 150V | 2 - Immediate | $359.76 | View Details | |
 | SPDN-C277-3Y | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 3 - Immediate | $359.76 | View Details | |
 | SPDN-B120-2S | SPD TYPE 1 180V MCOV 1 POLE | Type 1 | 180V | 1 - Immediate | $401.66 | View Details | |
 | SPDN-A240-1P | SPD TYPE 2 350V MCOV 1 POLE | Type 2 | 350V | 2 - Immediate | $416.11 | View Details | |
 | SPDN-A120-1P | SPD TYPE 2 180V MCOV 1 POLE | Type 2 | 180V | 2 - Immediate | $416.11 | View Details | |
 | SPDN-B120-3Y | SPD TYPE 1 150V MCOV 1 POLE | Type 1 | 150V | 0 - Immediate | See Page for Pricing | View Details | |
 | SPDN-B277-3Y | SPD TYPE 1 350V MCOV 1 POLE | Type 1 | 350V | 0 - Immediate | See Page for Pricing | View Details |
Published: 2023-08-17
