• The twist-lock plug stays securely plugged inuntil you take it out.
• 336-volt clamping voltage and computer-grade surge suppression.
• Includes a 20-amp circuit breaker.
• The 12/3 SJT 15-foot (4.5-m) cord meets today's higher load-capacity requirements.
• Rugged, matte-black steel housing.
• Features eight, rear-mounted receptacles with 3 in. center-to-center spacing.
• Fits all standard 19 in. relay racks

The ELK-951 is an RJ31/38X Telephone Jack containing solid state transient suppression designed to protect the Telephone inputs on an alarm control. It responds to power surges and transients in less than 1 nanosecond, automatically restoring after each surge within the specified ratings.

• Superior Solid State Surge Suppression
• Rapid Response Time
• Protects a Single Incoming Telephone Line
• Clamps Line-To-Line & Line-To-Ground
• Self-restoring After Surges Within Ratings
• RJ31/38X 8-Pin Modular Jacks
• Convenient Test points for Lineman's Test set
• Surface Mount Enclosure
• Response Time: < 1 Nanosecond
• Breakover Voltage: 300 Volts
• Peak Pulse Current: 100 Amps
• Ground Wire: 24" - 14 Gauge Stranded
• FCC Reg. No. 5K6USA-23140-XP-N Ren No. 0.0B
• Size: 4.4" x 3" x 1.15"

The ELK-952 provides exceptional protection against damage from lightning, voltage spikes, and surge damage coming into a phone line. It installs between the RJ31X Phone Jack and the Security Control. The ELK-952 features multi-stage protection and is 5 times faster than MOVs.

• 5 Stage Surge Protection
• Very Economical
• Easy to Install
• Works with Any Security Control
• Response Time: < 1 nanosecond
• Max. Signal Voltage: 250V (peak)
• Breakdown Voltage: 280V (nominal)
• Max 'Peak' Pulse Current: 100 Amps