Traffic Signaling Surge Protectors
SPA Series
The SPA-100T is a medium duty AC service surge arrestor which is solid state in design. It is intended for equipment which is located in outdoor cabinets exposed to lightning transients. Application examples are railroad equipment, motor control cabinets, flasher
cabinets, and traffic controllers.
FEATURES
 | No follow current
| 5 nanosecond response time
| Automatic recovery
| 120 VAC, 60 Ampere Service
| Flame-retardant epoxy encapsulated
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SPECIFICATIONS
| Repetitive Peak Surge Current |
15,000 Amp (8 x 20µs*) |
| Peak Surge Voltage (at 10kA) |
680 Volts |
| Energy Handling |
220 Joules |
| Power Dissipation Rate |
1.5 watts max. |
| Continuous AC Voltage |
130 VAC rms |
| Initial Breakdown (lma) |
212 Volts |
| Typical Capacitance |
4000 picofarads |
| Connections |
stud (s.s. #10:32) |
| Operating Temperature |
-40oC to +85oC |
| Dimensions |
1.5" x 2" x 0.5" |
The SP-60B is an economical method of protecting circuitry associated with 120 VAC interconnect signal lines commonly used in traffic control systems from lightning and transient surges.
The product is offered in four variations. The SPA-60BL, protects one circuit and is furnished with two leads. The SPA-60BL-2 is identical except it protects two circuits and is furnished with three leads.
The SPA-60BS protects one circuit and consists of one lead and a stud (also used for mounting). The SPA-60BS-2 is identical except it protects two circuits and consists of two leads and a stud.
In the presence of normal interconnect line voltage and frequency (60 Hz) the SPA-60B possesses the ideal characteristics of high impedance across the protector and no impedance in series with the line. In the presence of transients, the protector appears as
very low impedance, thereby shunting the surge to ground.
FEATURES
| Reduces costly damage to electrical/electronic equipment
| Clamps overvoltage surges caused by lightning or switching Transients
| Responds in nanoseconds
| Automatically recovers after surge is dissipated
| Very economical
| Ideal for 120 VAC interconnect
| Handles repeated surges
| | | | | | |
Peak surge trip point:
600 V/µs impulse
3000 V/µs impulse |
Less than 890 volts nominal
Less than 950 volts nominal |
| Surge Response Time |
Less than 200 nanoseconds @ 10kV/µs |
Surge handling ability:
Peak current (single pulse) (8x20µs)
Occurrences @ 10kA |
20,000 amperes per circuit
25 times minimum |
| Discharge voltage |
Under 200 volts @ 1000 amps |
| Insulation Resistance |
Greater than 100 megohms |
| Operating line voltage |
120VAC, RMS signal phase |
Absolute maximum
Operating line current |
1 ampere |
| Temperature range |
-40oC to +85oC |
Size:
BL Types
BS Types |
1.50" x 5" x .8"
1.05" square |
| Weight |
2 oz |
| Mounting Studs |
No. 10:32 x 3/8" S.S. |
| Leads |
12", #14 ga. wire |
INSTALLATION
Stud Mounted Unit: Connect black lead to interconnect signal line near entry point into cabinet. Shorten lead as much as possible. Bolt unit to clean metal surface bonded to power/earth ground (cabinet in most cases).
Lead Supported Unit: Shorten leads. Connect between the interconnect signal line and power/earth ground.
NOTE: This product is intended for use on 120VAC interconnect lines. Do not use on AC service or power lines.
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