RJ11 surge protection device stands for telephone line and extensions. The induced surges during lightning flashes in telephone line generate a disturbance and interference. To avoid such menace, JMV has designed the RJ11 surge protection device which is tested as per standard IEC 61643-21. The numerous modules are available for RJ11 surge protection devices i.e., 1, 4, 8, 12, 16 and 24. The IP20 protection degree for this surge protector can bear the nominal fault current up-to 5kA. The RJ11 surge protection device grant the protection for DDN, modem, fax and other telephone line equipment's. Telephone line electrical machine's or equipment can get the phase out of surges easily by installing a rj11 surge protector. We offer this surge protection device to prevent the damage which occurs due to electrostatic discharge or surges .