Brochures and Data Sheets

Edco H Series
Telecom/Punch Block Protection
Advanced Ultra High Speed Technology
The Edco H-Series modules are ultra high speed fused solid state secondary
protectors for KEY/PABX systems. The units are available in three different
clamping voltages. The Edco H-Series is constructed with solid state silicon
foldback technology, polyswitch resettable fuses — PTCs — and failure fuses.
These protection modules are intended to be used in conjunction with proper
primary protectors (UL 497). The protective elements switch from the normal
high-impedance state to a low-impedance state upon a detection of a surge,
then switch back to high impedance after the surge has passed. The Edco
H-Series single pair modules fit onto a standard Edco MI-50 split block and
replace bridging clips. In addition, these modules require the Edco MGB Ground
Rail for each Edco MI-50 block used.
Operating Voltage 50, 180, 230 VDC
Clamping Voltage 65, 200, 270 VDC
Operating Current 0.15 A
Peak Surge Current 160 A
(10 x 1000 µs T & R to Ground)
Frequency Range 0– to 20 MHz
Insertion Loss < 0.1 dB at 20 MHz
SPD Technology Silicon Breakover Device
w/ Series PTC
Connection Type Clip
Operating Temperature -40°C to +85°C
Dimensions (Inches) 1.25H x 0.4W x 2.8L
Weight 1 oz
Certifications UL 497A, CUL
Ordering Information
Central Office/Trunks HCO
Analog Extensions HAE
Digital Extensions HDE
General Technical Specifications Installation
DO NOT daisy chain grounds. NOT intended for shield termination.
Install ground in accordance with all applicable codes.
16
Data/Signal Line Protection
TTA-2 Test Point Adaptor
Plugs into test points on HCO, HDE, and HAE, as well as other Edco 66 Block
Protectors. Adaptor is equipped with test clips for connection to telephone test
(butt) set or meter. Order part # TTA-2
TTA-2 TEST POINT ADAPTOR
(SOLD SEPARATELY)