CT4299
User Guide
Cal Test Electronics
CT4299-# Fused Probe w/ Locking Safety Cap, User Guide
© 2019 Cal Test Electronics. All rights reserved.
Cal Test Electronics products are covered by US and foreign patents, issued and
pending. Information on this publication supersedes all earlier versions. Specications
are subject to change without notice.
Made in Taiwan
Safety Notice and Symbols
This product is designed to IEC 61010 safety requirements
WARNING A warning statement calls attention to an operating procedure, practice, or
CAUTION A caution statement calls attention to an operating procedure, practice,
The following symbols may appear on the product or in its documentation:
Safety is compromised if instructions are not read, understood, and followed.
condition, which, if not followed correctly, could result in injury or death to
personnel.
or condition, which, if not followed correctly, could result in damage to or
destruction of parts or the entire product.
Caution, see documentation for details
Fuse inside
WARNING Never exceed the maximum interrupt current of the fuse. The fuse protects
WARNING Before use check fuse for continuity and good condition.
WARNING Install only specied fuse, or equivalent, sizing fuse to the required short
Never open fused probe while connected or energized.
Disconnect from all devices and leads before replacing fuse.
Clean fused probe with cloth lightly moistened with water only. Dry thoroughly before
use.
Do not use if any part is damaged. All maintenance should be referred to qualied
service personnel only.
Do not use in wet or explosive atmosphere.
the equipment against short-circuit but not against over-currents.
circuit current.
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Cal Test Electronics
Description
The CT4299-# is a fused probe with a 2 mm tip to 4 mm sheathed jack connection
intended to provide fused protection for DMM users from transient over-voltages and
arc-fl ash.
Fuse
• 6.3 x 32 mm, 0.5A, 1000 V, 50 kA, p/n CT4049-0.5A
Speci cations
• Voltage Rating: 1000 V CAT III, reinforced insulation, pollution degree 2
• Current Rating: See rating on the fuse
• Operating temperature: 0°C to 60°C (32°F to 140°F) and max RH 85%; altitude
up to 2000 m.
• Storage temperature: -20°C to 70°C (-4°F to 158°F)
CE Compliance
This product meets the essential requirements of the applicable European Directives
as follows:
• Low-Voltage Directive (safety):
2014/35/EU
Standard EN 61010-031:2015 +
AMD1:2018
• Restriction of Hazardous
Substances Directive (RoHS):
2011/65/EU+AMD 2015/863
Fuse Replacement
• Disconnect from all devices and
test leads
• Unscrew fused probe body
by turning probe tip half
counterclockwise.
• Remove and replace fuse
• Screw probe pieces together
Tip Cover Removal
• Use small blade screwdriver to pry
up tab and slide cover off. Lifting
too much on tab can damage
and reduce the lifetime of the
cover.
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Denitions
POLLUTION - addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a
reduction of dielectric strength or surface resistivity.
• POLLUTION DEGREE 2 - only non-conductive pollution occurs except that occasionally a
temporary conductivity caused by condensation is expected.
MEASUREMENT CATEGORY - classication of testing and measuring circuits according to the types
of mains circuits to which they are intended to be connected.
• MEASUREMENT CATEGORY II (CAT II) - measuring circuits connected directly to utilization
points of the low-voltage mains installation.
• MEASUREMENT CATEGORY III (CAT III) - measuring circuits connected to the distribution
part of the building’s low-voltage mains installation.
• MEASUREMENT CATEGORY IV (CAT IV) - measuring circuits connected at the source of
the building’s low-voltage mains installation
• The measurement category of a combination of fuse adapter with a test lead, probe, or other
accessory is the lower of assembled products
.
Service
If you have a need for technical or sales support, please contact us:
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
800-572-1028 or 714-221-9330
caltestelectronics.com
451003-001 Rev. A
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