Littelfuse SPDN Surge Protective Devices

Littelfuse SPDN Surge Protective Devices (SPDs) protect equipment from high-energy transient overvoltage events. The SPDs offer more direct modes of protection within a small package, including L-N, L-G, and N-G. The Littelfuse SPDN SPDs feature a stacked, thermally protected Metal Oxide Varistor (MOV) design, clamping capability, and an external LED indicator. The SPDN series operates with a 50kA to 130kA max surge current rating range and within a 50Hz to 60Hz frequency range. The SPDs are RoHS/REACH compliant and ideal for construction, food/beverage, HVAC/refrigeration (HVAC/R), light industrial, water/wastewater, and oil and gas applications.

Features

Increased direct protection modes in a small package
- L-G (SPDN-A, B only)
- L-N
- N-G
50dB UL 1283 EMI/RFI filtering from 10kHz to 100MHz
Clamping capability

Withstands high-energy transients
Stacked MOV design
Load-side installation
Thermally protected MOV
External LED indicator
Compact footprint

Applications

Construction
Food and beverage
HVAC/R

Light industrial
Oil and gas
Water/wastewater

Specifications

SPDN-A
- 130kA max surge current rating per phase
- 20kA I-nominal rating
- 200kA UL 1449 short circuit current rating
- <25ns response time
- 50Hz to 60Hz operating frequency
- 4000m max altitude
- IP20 built-in degree or protection
- 2.75″ x 7.95″ x 3.06″ dimensions
- -40°C to +85°C operating temperature range
- RoHS/REACH compliant
SPDN-B
- 130kA max surge current rating per phase
- 20kA I-nominal rating
- 200kA UL 1449 short circuit current rating
- <25ns response time
- 50Hz to 60Hz operating frequency
- 4000m max altitude
- IP20 built-in degree or protection
- 3.25″ x 5.02″ x 2.93″ dimensions
- -35°C to +85°C operating temperature range
- RoHS/REACH compliant

SPDN-C
- 50kA max surge current rating per phase
- 20kA I-nominal rating
- 200kA UL 1449 short circuit current rating
- <25ns response time
- 50Hz to 60Hz operating frequency
- 4000m max altitude
- IP20 built-in degree or protection
- 3.25″ x 5.02″ x 2.93″ dimensions
- -35°C to +85°C operating temperature range
- RoHS/REACH compliant
SPDN-D
- 50kA max surge current rating per phase
- 20kA I-nominal rating
- 200kA UL 1449 short circuit current rating
- <25ns response time
- 50Hz to 60Hz operating frequency
- 4000m max altitude
- IP20 built-in degree or protection
- 2.75″ x 4.25″ x 2.41″ dimensions
- -35°C to +85°C operating temperature range
- RoHS/REACH compliant

Littelfuse SPDN Surge Protective Devices

Features

Applications

Specifications

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