1675 01

Features
■ High current handling/capability
■ Transparent housing
■ Magnified fuse indicator window
■ Low leakage - up to 36 V
Applications
Railroad electronic equipment:
■ Bungalows
■ Wayside Interface Units (WIU)
■ Electronic enclosures
■ Fail-open-circuit indicator
■ AREMA compliant
1675-01 Rail Surge Protective Device
General Information
The Bourns® Model 1675 Surge Protective Device (SPD) was designed specifically for railroad wayside applications. The Model 1675 is
intended to protect signal and track circuits and other electrical circuits leaving the bungalow. The Model 1675 employs a heavy duty
multi-technology protection design that shunts surge current to ground in the event of a lightning strike. In the event of a strike that
disables the protector unit, two visual indicators will assist technicians in being able to quickly identify the activated unit within the
crowded space of the electronics enclosure. The visual indicators are spring-loaded red tabs - when sticking out of the side of the
arrestor, the unit should be replaced. There is also a fuse designed into the arrestor which is visible through the magnifying lens at the
top of the arrestor. If this fuse is blown, the arrestor should be replaced.
The arrestor has also been designed to prevent the shorting of signals or track circuits to earth GND in the event of a heavy duty strike.
See page 2 for application details.
Electrical Characteristics
Operating Voltage .................................................................................................................................. Up to 36 Vdc
Operating Current .................................................................................................................................. Up to 12 A
DC Sparkover ........................................................................................................................................ ~ 40 V
Impulse Sparkover 100 V/µs ................................................................................................................. < 300 V
Impulse Discharge Voltage .......................................................3 kA, 6 kV, 8/20 µs .............................. > 1000 operations
20 kA, 8/20 µs .................................... > 25 operations
40 kA, 8/20 µs .................................... > 10 operations
1000 A, 10/1000 µs ............................ > 1000 operations
Let-through Voltage for a 3 kA, 6 kV, 8/20 µsec Surge.......................................................................... See chart below
General Characteristics
Operation and Storage Temperature ..................................................................................................... -40 °C to 75 °C
Flame Rating ......................................................................................................................................... UL 94V0
Failure Mode.......................................................................................................................................... OPEN CIRCUIT
Unit Weight ............................................................................................................................................ 3 oz.
Warranty ................................................................................................................................................ 2 years
How to Order
Let-through Voltage
Part Number ..................................................................1675-01
Units per Inner Package ...........................................................5
Units per Shipping Package .................................................100
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
8/20 µs / 6 kV / 3 kA
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
1675-01 Rail Surge Protective Device
Product Dimensions
LINE
25.4
(1.00)
6.5 INCH LEAD INSULATED #14 AWG WIRE
WITH TEST TERMINAL AND NUT
DIMENSIONS:
60.7
(2.39)
MM
(INCHES)
EQUIPMENT
GROUND
60.3
(2.375)
WARNING! The Model 1675-01 should NOT be used to suppress surges
on the track connection for crossing equipment.
Application/Installation
The Model 1675-01 is a passive device and is compatible with electronic equipment operating at voltages up to 36 Vdc or 25 VAC.
The protector is intended to be mounted in series between the signals or track leads (Line) and the leads going to the equipment to be
protected (Equipment).
Equipment
TAB
LINE
Blue
Wire
+ Track or Signal
1675
Arrestor
GND
TAB
– Track or Signal
Equipment
TAB
LINE
Blue
Wire
SIGNAL EQUIPMENT
1675
Arrestor
GND
TAB
06/15
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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