Surge Protection Module - Voice 32 Heavy duty surge handling capabilities Balanced operation UL and CUL listed, R.U.S. approved Integrated Test Points Designed to meet or exceed Telcordia standards Non-radioactive ISO9002 certified manufacturer Gas Tube (Life Safety Device) Model No. Clamping Voltage PTC Applications 3B1E 350v NO Used by Telco's over long runs where equipment protection is not an issue. 4B1E 350v YES Same as the 3B1E with Positive Temperature Coefficient self-resetting current limiter. (PTC) Solid State (Equipment Protection) 3B1S-300 300v NO Use with field tested rugged equipment 4B1S-300 300v YES Same as the 3B1S with Positive Temperature Coefficient self-resetting current limiter. (PTC) 3B1FS-240 240v NO Solid State performance for analog lines 4B1FS-240 240v YES Same as the 3B1FS with Positive Temperature Coefficient self-resetting current limiter. (PTC) 4B3S-75 (RED) * 75v YES 48v Digital phone systems. (PTC) 3B3S-30 (RED) * 30v NO 24v Digital phone systems and low voltage, low speed data applications. * Analog Phones, Switches and Fax Machines operate above 75v and will not function properly behind a 75v or 30v module. Grounding/Continuity 3B2N Grounding N/A NO Includes no protection and provides permanent path to ground. 3B5N Continuity N/A NO Includes no protection and provides continuous continuity from input to output.
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