SP: Spike Protectors
• 45VDC, 55VAC,130VAC,
& 250VAC Ratings
• Ground Connection
• Varistor & Triode
Combinations
• Stranded Wire Leads
• Analog Circuit Protection
• Solid State Output Protection
Operation
Spike Protectors
R-K Spike Protectors are applied to control and instrumentation loop circuits where transient electrical voltages can cause malfunctions or damage to solid state controls or process systems. The Spike Protectors are designed to control voltage spikes within a tolerable level while minimizing any effect to the analog control signals. The SPs are typically connected in parallel with the signal leads and ground at the controller. The varistor combinations allow the excessive voltage spikes to dissipate line to line and line to ground.
Specifications
Electrical
Line Voltage: Up to 45VDC or Up to 240VAC
Varistor: (Rated Individually)
Voltage Code / Max Allow Voltage / Max Clamp Voltage / Energy (Joules)
45D / 45VDC / 110V @ 2.5A / 2.7
55A / 55VAC / 165V @ 25A / 10
130A / 130VAC / 340V @ 50A / 38
250A / 250VAC / 650V @ 10A / 17
Triode: (Three-electrode gas-tube surge protector)
Sparkover Voltage: 250-350VDC
Physical
Termination: #18 Stranded Wire Leads
Packaging: Epoxy Filled with Mounting Tab for #10 Screw
Weight: 1 Oz.
Ambient Temperatures
Operating: -40°C to 85°C
Storage: -40°C to 85°C