120 VAC | 10 kA The ASCO Model 230 Surge Protective Device is an economical method of protecting circuitry associated with 120 VAC interconnect signal lines commonly used in traffic control systems.

120–480 VAC | 250–750 kA/Phase The ASCO 570 Surge Protective Device is a true hybrid, offering a coordinated multi-stage system of suppression, integrating the fast response time of the silicon avalanche diode (SAD) modules with the high-energy capability of the MOV modules. Superior clamping at surge current ratings up to 375 kA per mode or 750 kA per phase.

120–480 VAC | 160–750 kA/Phase Repetitive life cycle capability, high-energy capacity and years of proven field experience allow us to confidently recommend the ASCO Model 560 Surge Protective Device for any "HIGH-RISK" location or "CRITICAL" process. A modular design with available surge current ratings from 160 kA to 750 kA per phase. Provides facility-wide surge suppression and EMI/RFI filtering at service entrance and distribution panels.

120–480 VAC | 130–500 kA/Phase The ASCO Model 520 Surge Protective Device offers continuous protection from damaging transients and electrical line noise, utilising patented circuitry to monitor the status of all protection modes, including neutral to ground. Should protection be unavailable in any mode, the green LED will be extinguished, and the red LED will be illuminated. The ASCO Model 520 can be installed on any panel within your facility, making it the ideal choice for cascaded applications.

120–300 VAC | 130–160 kA/Phase The ASCO Model 515 Surge Protective Device, is a panel board extension offering continuous protection from damaging transients and electrical line noise. The ASCO Model 515 utilises patented circuitry to monitor the status of all protection modes, including neutral to ground. Should protection be unavailable in any mode, the green LED will be extinguished, and the red LED will be illuminated.

120–480 VAC | 65–160 kA/Phase The ASCO Model 510 Surge Protective Device offers continuous protection from damaging transients and electrical line noise. It utilises patented circuitry to monitor the status of all protection modes, including neutral to ground. Excellent choice for retro-fit installations.

120 VAC | 40 kA (L–N), 40 kA (L–G), 13 kA (N–G), 93 kA/Total The ASCO Model 257 (Edco® 1210IRS) offers greater total peak surge current capacity and better filtering than the model 254 and also incorporates a failure indicator as well as remote sensing circuitry. In addition, the method of wire termination is different, utilising wire leads and terminal block connectors on the Model 257 instead of stud connections.

120 VAC | 39 kA/Phase The ASCO Model 254 (Edco® SHA-1210) Surge Protective Device and Filter absorbs power line noise and switching transients that other suppressors and RFI filters pass through. The Model 254 can replace the RFI filter when high attenuation of noise above 25 MHz is not required.

120 or 240 VAC | 58.5 kA The ASCO Model 251 (Edco® SHP) Surge Protective Device's hybrid design exhibits performance levels unattainable with simple "shunt type" protectors. The two active clamp stages, large inductor and shunt capacitance effectively halt high rate-of-rise surge waveforms, thus preventing initial voltage overshoot.

120 VAC | 53 kA/Phase The ASCO Model 234 (Edco® SHA-1201) Surge Protective Device is specifically designed for type 170 traffic controller cabinets that require power neutral to remain isolated from cabinet earth ground. Protection is provided both between phase-to-neutral and neutral-to-ground. If neutral is bonded to earth ground in the cabinet, the ASCO Model 233 (Edco SPA-100T) should be considered as a cost-effective alternative to the Model 234 (Edco SHA-1201).

120 VAC | 26 kA and 29 kA The ASCO Model 232 (Edco® MPA) modular output file protector is a modular device intended for use on traffic control load relay outputs. Part numbers 232120NS26KAA9N0 will protect six output circuits and 232120NS26KAA6N0 will protect four output circuits.

120 VAC | 39 kA The ASCO Model 231 (Edco® SPA-303) is a three-circuit Surge Protective Device intended for use on traffic control load relay outputs. The Model 231 is furnished with three leads and a ground stud.

Low Voltage DC | 15–125 A The ASCO Model 180 Surge Protective Device is designed to conveniently protect eight-wire, low-voltage data circuits and employs two RJ-45 jacks for easy installation. The Model 180 utilises silicon avalanche (solid-state) suppression technology, and exhibits very low capacitance to accommodate high data rates. This unit supports high-speed data rates of over 100 Mbps.

Low Voltage DC | 500 A The ASCO Model 173 Surge Protective Device is a dual pair (four-wire) module implementing Metal Oxide Varistor technology.

Low Voltage DC | 160 A The ASCO Model 171 Surge Protective Device is a solid-state, two-line telephone interface protector module. This unit is specifically designed to protect both phone lines required by commercial fire/security panels.

Low Voltage DC | 500 A (Power) and 125 A (Data) The ASCO Model 170 is an access control protection module designed for typical Wiegand outputs for access devices. This is a five-wire module that accommodates low voltage data lines for 5 VDC circuits. Fifth wire power protection will allow up to 24 VDC.

Low Voltage DC | 5 kA coax The ASCO Model 165 Surge Protective Device is specifically designed for lightning protection on coax cable TV systems. The protector is easily installed with standard type "F" coax connectors. A ground wire must be attached to the unit. The Model 165 offers low loss even at frequencies approaching 750 Mhz. This is important for error-free data communications.

Low Voltage DC | 5 kA coax The ASCO Model 163 Surge Protective Device is a primary protector kit for in-line coaxial communication lines.

Low Voltage DC | 10 kA coax The ASCO Model 162 Surge Protective Device is specifically designed for lightning protection on closed-circuit TV systems. The protector is easily installed with standard type BNC coax connectors. The Model 162 offers low loss even at frequencies approaching 500 Mhz. This is important for error-free data communication applications.

Low Voltage DC | 26.6 A The ASCO Model 161 Surge Protective Device is easily installed directly at and in series with a camera's power terminal. The Model 161 uses 2.1 mm jacks to connect to the camera's power adapter and power feed. High-speed SAD technology clamps high-energy transients that could damage the CCTV equipment.

Low Voltage DC | 500 A The ASCO Model 155 suppressor kit is intended for installation with electrical switching devices that are connected through a relay contact on typical access control panels.

Low Voltage DC | 40 kA The ASCO Model 152 Surge Protective Device combines highly reliable, non-degrading silicon avalanche diode (SAD) technology, along with high-energy gas tube protection. This technology combination leverages the best aspects of each protection method in a single, reliable design to ensure optimal performance.

75 VDC | 250 A The ASCO Model 144 is a two-loop protection module that simply plugs into a standard AMP 6-position socket (no. 2-530666-1).

5, 12, 24, 30, 36, 52 or 120 VDC | 10 kA The ASCO Model 142 Surge Protective Device is a single-pair cube implementing three-stage hybrid technology. This cube addresses overvoltage transients with gas tubes and silicon avalanche components.

Low Voltage DC | 10 kA The ASCO Model 141 is a three-terminal device, two of which are connected across the signal inputs of the detector for differential mode protection, and the third is grounded to protect against common mode damage. Model 141 is intended for all current detector models on the market.

Low Voltage DC | 0.250 kA The ASCO Model 140 SPDs are three terminal devices, two of which are connected across the signal inputs of the detector for differential mode protection, and the third is grounded to protect against common mode damage. The Model 140 SPDs are intended for all popular makes of loop detectors presently on the market.

Low Voltage DC | 0.200 kA The ASCO Model 138 incorporates female jacks in and out. The ANALOGUE Model 138 voltage clamp is set for CO trunks and analogue telephone extensions (with ring in voltage), and the DIGITAL Model 138 voltage clamp is set for digital extensions (no ring in voltage).

Low Voltage DC | 10 kA The ASCO Model 137 is a single pair telephone protector that implements an advanced three-stage hybrid design. Model 137 is specifically designed for more rugged applications such as traffic cabinets.

Low Voltage DC | 0.160 kA The ASCO Model 136 SPDs are single-pair telephone or data line protectors that implement advanced two-stage hybrid design. The Model 136 for Phone Systems is nearly identical to the Alarm System SPD except without the shorting bars. Protected equipment such as modems are plugged into the female modular jack on the Model 136.

Low Voltage DC | 0.160 kA The ASCO Model 135 modules are ultra-high-speed fused solid-state dual listed Primary (UL 497) and Secondary (UL 497A) protectors for KEY/PABX systems. The units are available in analogue and digital clamping voltages. Model 135 single pair modules fit onto a standard M1-50 split block and replace bridging clips. In addition, these modules require an ASCO MGBW Ground Rail accessory for each M1-50 block used.

12, 56 VDC | 0.2, 0.5 kA The ASCO Model 130 modules are solid-state protectors for Intercom Extension Pairs. These hybrid protectors are intended to be used in conjunction with the ASCO MGBW ground rail and a standard M1-50 punch-down block. The Model 130 modules feature solid-state resettable fuses (PTCs) between the protected equipment and the overvoltage clamping components. This unique design prevents problems with "All-Call" in the event of catastrophic protector failure.