Joslyn

Custom and OEM Protectors

Custom surge protection  

Custom and OEM Protectors
Customized Protection

For over 60 years, we have been creating custom and OEM surge protection products. If you have a different/unusual application or space requirement, need other equipment integrated in conjunction with surge protection, or have special let through level restrictions, contact us. We are readily available to help you identify and correct application or installation variables that contribute to load electronics damage. Our team of product engineers participate in IEEE, PEG, NEMA, IEC and other electrical protection standards committees. We have the expertise to develop high performance solutions for almost any application. Let us design a custom solution to fit your needs!

1000 Series

1000 Series DC surge protector  

1000 Series
Designed to Meet Any Need

Designed to meet the needs of any DC application, this series of products is available in a large variety of shapes, sizes and kA ratings from 25kA to 50kA. These protectors prevent damage to rectifiers, power storage banks, DC powered load equipment and the input side of inverters.

Several popular configurations are shown below. Contact us for additional configurations.

 

LDP

LDP light duty surge protector

 

LDP Series
Setting the Industy Standard

There are numerous Joslyn Light Duty Protector designs, many of which have been awarded U.S. and European patents. With almost a million light duty field installations serving applications ranging from sprinkler system control panels to nuclear missile silo matrix protection arrays, Joslyn Light Duty Protectors offer the versatility to serve almost any application.

 

Available in the following voltage configurations:

LDP 20
LDP20-120-x
LDP20-127-x
LDP20-230-x

LDP 25
LDP25-120-x
LDP25-127-x
LDP25-230-x

LDP 30
LDP30-120-x
LDP30-127-x
LDP30-230-x

ROHS Compliant

Surgitron III

Surgitron III multiple surge protection

 

Surgitron III
Multiple Protection

Tens of thousands of field installations have proven the Surgitron III family of products reliable. May be mounted to panels and/or brackets for in-wall installation and protects against multiple lightning strikes or other induced voltage surges. The surge current capability of this family exceeds the heaviest surge described by ANSI/IEEE C62.41-1991 (Location category C3). Offered in the -21 or -49 series, both include dry relay contacts. Measurements on the -21 series are 2” x 3.” The -49 series measures 3” x 6.”

 

Available in the following voltage configurations:

120 Vac, Single Phase, 2 Wire

Surgitron II

Multiple surge protection

 

Surgitron II
Multiple Protection

The Surgiton II series has be replaced with our JSP line of products. Please contact us so that we may provide assistance with finding a JSP model to replace your Surgitron II.

Transend

TransEnd surge protector

TransEnd
Versatility—Reliability—Value

TransEnd delivers worry-free reliable performance. This MOV (Metal Oxide Varistor) based surge protector is available in all standard low-voltage AC configurations with surge current capabilities ranging from 25kA to 100kA. Designed to suppress transient surges before they effect sensitive loads with a built in high-frequency noise filter. The TransEnd is designed and tested to withstand surge currents in accordance with ANSI/IEEE recommendations, and meets the safety requirements of UL 1449 4th edition. Additionally, the single-pulse surge current capacity (per mode) has been tested and proven per NEMA recommendations.

Available in the following voltage configurations:

120/240VAC, Split-Phase, 3-wire + Ground,
Ex: XN50-120/240-2G

120/208VAC, 3-Phase, 4-wire + Ground,
Ex: XN50-120/208-3GY

Surgitron I

Primary aurge protection

Surgitron I
Primary Surge Protection

Surgitron I is a modular design that has an exceptional track record of protection and reliability for over 30 years. The Surgitron I offers primary protection against multiple lightning strikes or other voltage surges. The surge current capability exceeds the heaviest surge described by ANSI/IEEE C62.41-1991 (Location Category C3). With tens of thousands of satisfied customers, the Surgitron I is the safe bet when you cannot afford to have costly damaged to electronics or down-time due to surge induced repairs.

Available in the following voltage configurations:

Model 1260-45/85

120 Vac, Single Phase, 2 Wire

Model 1261-45/85

230 Vac, Single Phase, 2 Wire

Model 1265-85

JSP

JSP Surge Protective Devices  

JSP Series
Surge Protective Devices

The JSP family of products offers the best in surge protection performance and reliability with component-level fusing and optional advanced filter for enhanced ringing transient plus EMI/RFI attenuation. The JSP is designed and tested to withstand surge currents in accordance with both ANSI/IEEE and IEC recommendations, plus it exceeds the safety requirements of UL 1449 4th edition. Available in all standard US domestic and international voltages, plus power system configurations with surge ratings running from 60 to 400 kA, the JSP is the ideal choice for standard surge protection needs.

For spaces requiring a more compact design, the JSPR unit is mounted recessed into the wall, avoiding any protrusion. This design is useful in hospitals, schools, and retail settings. Available in 120 and 160 kA only.

Available in the following voltage configurations:

JSP 400, 300, 240 & 200 - All Voltages including Delta

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