Surge Protective Devices

Jan. 20, 2011

The Model SPD Series (Surge Protection Devices) are designed to protect sensitive electronic equipment from the harmful effects of transients and RFI/EMI interference.

Models are configured for either parallel or series installation or can be either din rail or wall mounted. Units are rated as Type 4 SPDs for application in Type 1-2 locations making the SPD Series the idea choice for incorporation into control cabinets to protect PLCs, irrigation systems, Alarm and Security systems, POS terminals, CNC Machinery, and most other sensitive microelectronic based equipment.

The Model SPD Series units are self-contained in rugged plastic enclosures and employ twenty millimeter (20mm) MOVs as their key suppression elements. A green LED is provided as a status indicator identifying power on. Units are line load sensitive and interface with the incoming power cables via screw terminals (barrier strips) capable of handling conductors from #22 to #8 AWG, depending upon application and current ratings.

It is recommended that SPD units be interfaced directly between incoming power cables and located as close as possible to the equipment requiring protection. Units are intended for incorporation in a suitable enclosure.

Model 

Small Case 

Large Case 

Surface Voltage 

24, 48, 120 

24, 48, 120, 250 

Surge Rating 

20kA 

40kA 

Current Rating 

15 Amps, 30 Amps 

15 Amps, 30 Amps 

Maximum Load 

15 or 30 Amps, depends on unit configuration

Humidity 

5% to 95% non-condensing

Terminal Strips 

#22—#14 AWG at 15 Amps and
#16—#8 for 30 Amps Models

Enclosure Material 

ABS plastic

Weight 

8 oz. 

15 oz. 

 

 

ORDERING INFORMATION

Model 

Case
Style 

Current
Rating 

Service
Voltage 

Surge
Rating
 

SPD020/024-10-F-1/15A 

Small 

15 Amps 

24 Volts 

20kA 

SPD020/048-10-F-1/15A 

Small 

15 Amps 

48 Volts 

20kA

SPD020/120-10-F-1/15A 

Small 

15 Amps 

120 Volts 

20kA

SPD020/120-10-F-1/30A 

Small 

30 Amps 

120 Volts 

20kA

SPD040/120-10-F-1/15A 

Large 

15 Amps 

120 Volts 

40kA 

SPD040/120-10-F-1/30A 

Large 

30 Amps 

120 Volts 

40kA 

SPD040/250-10-F-1/15A 

Large 

15 Amps 

250 Volts 

40kA 

SPD040/250-10-F-1/30A 

Large 

30 Amps  

250 Volts 

40kA