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Littelfuse LVSP Fuses
LVSP fuses protect TVSS products and are designed to
survive 8x20µs lightning surges as described in various standards
(UL1449, IEC61000-4-5 & IEEE C62.41) without opening. This enables
TVS devices such as varistors to perform necessary surge suppression as
intended.
The first set of LVSP fuses, now available, are rated for peak surge currents from 5 to 100 kA using the industry standard 8x20µSec waveform. The LVSP series is a UL recognized “MOV Protector Fuse” and as such is expected to aid TVSS system designers in gaining compliance with the UL 1449 standard for their “hard-wired” TVSS products. These include TVSS entrance panels, high capacity uninterruptible power supplies and devices that have integrated TVS functions such as motor controls and generators.
Littelfuse offers a complimentary LVSP for popular ratings of each of the following series: HB34, HA, TMOV and iTMOV varistors. Littelfuse LVSP series fuses are currently UL Recognized for 5-80kA surge withstand with a 100kA version available for sampling.
The LVSP fuse will protect the TVSS by opening the Varistor circuit should it become shorted due to energy beyond its rating or thermal runaway due to an abnormal sustained overvoltage condition. The series has a maximum 200 kA interrupt rating at 600 VAC.
Features & Benefits:
- Rated at 600 VAC - 200kA I.R.
- Available in Surge Ratings from 5-100kA (8x20µs)
- Very current limiting under AC short-circuit conditions
- Available in Cartridge, Bolt-in and PC board mount versions
Additional Information:
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