Datasheet

626 PHOENIX CONTACT
UL 94
Inflammability classification
UL 94 describes inflammability tests that
have gained particular importance in the
field of electrical engineering. Behavior in
fire is the main focus. Items are classified
according to either UL 94 HB (Horizontal
Burn) or UL 94 V (Vertical Burn). The test
setup is such that the 94 V0/1/2
classifications are stricter than the 94 HB
classification.
UL 94 V0/1/2
After conditioning, the test bar is
vertically clamped and flame-treated several
times for 10 seconds at a time. Between the
flame treatments, the time until the test bar
is extinguished is measured.
Afterwards, the afterburning times and
the drip behavior are evaluated.
The plastic used for Phoenix Contact
terminal blocks meets the higher-grade
criteria for classification as a V0 material.
Test setup
according to
UL 94
Classification
UL 94 V0 UL 94 V1 UL 94 V2
Burning time after each flame treatment
≤ 10 s ≤ 30 s ≤ 30 s
Total burning time after 10 flame treatments
≤ 50 s ≤ 250 s ≤ 250 s
Glowing time after the 2nd flame treatment
≤ 30 s ≤ 60 s ≤ 60 s
Complete burn-off
no no no
Ignition of the absorbent cotton under the sample
no no no
IEC 60529/DIN EN 50274
Shock protection
Electrical installations and plants must
also afford service technicians a high level of
safety when carrying out maintenance
involving measuring and testing tasks.
BGV A2 specifies safety distances for
work, operation, and occasional handling
near parts that pose a potential danger in
low-voltage plants up to 1000 V AC and
1500 V DC, based on standard IEC 60529.
For the purpose of contact safety, a
distinction is made between back of hand
safety and finger safety. The extent to which
conductive parts are safe to touch is tested
with a test finger and test ball. It must not
be possible to touch conductive parts with
the test equipment.
Phoenix Contact terminal blocks are
designed according to IEC 60529/
DIN EN 50274.
Test finger Ø 12.5 mm Test ball Ø 50 mm
Technical information
Quality tests