CHINT AX21-M8 User manual

AX21-M8/AL21-M8
SHT21-M8/SHT22-M8/SHT24-M8
UVT21-M8/UVT22-M8/UVT24-M8
User Manual
Thank you for choosing this product.
Before installing, using or maintaining this product,
Please read the instruction manual carefully.
Auxiliary alarm contact slot
snaps into breaker rib
TRIP
Wire outlet after cutting
Press Press
Click
1N.m
AX21-M8 (auxiliary contact)-correspondingly
installed in the slot marked AX on the circuit
breaker
When the circuit breaker is in the "open" or
"free trip" position
12 11
14
When the circuit breaker is in the "Closed"
position 12 11
14
AL21-M8 (alarm contact)-correspondingly
installed in the slot marked AL on the circuit
breaker
When the circuit breaker is in the "open" or
"closed" position
12 11
14
When the circuit breaker is in the "free trip"
(alarm) position
12 11
14
AX21-M8 Auxiliary contact
AL21-M8 Alarm contact
SHT21/22/24-M8 Shunt release
UVT21/22/24-M8 Under-voltage release
AInstallation of auxiliary contacts and alarm contacts
BAuxiliary contact, alarm contact
action test
Environmental protection
In order to protect the environment, when this product or
its components are discarded, please properly dispose of
them as industrial waste; or send them to a recycling
treatment station for classification, dismantling, recycling
and reuse according to relevant national regulations.

TRIP NM8N-250 side snaps
into the buckle
Click
Wire outlet
after cutting
1N.m
SHT 21/22 / 24-M8 (shunt release)
When the control voltage is maintained at 70% -110% Un, the
shunt can reliably open the circuit breaker.
UVT 21/22 / 24-M8 (undervoltage release)
a. When the control voltage drops to 35% -70% Un, undervoltage
can reliably open the circuit breaker.
b. When the control voltage is 85% -110% Un, the circuit breaker
should be able to close reliably.
c. When the control voltage is less than 35% Un, it should be able
to prevent the circuit breaker from closing.
Note: The circuit breaker equipped with an undervoltage release
can only open and close normally when the control voltage is
85% -110% Un.
BShunt release, undervoltage releaseaction test
NM8N-400 / NM8N-630
type shaft snaps into
the buckle
Click
AShunt release, undervoltage release installation
When installing 250-frame
mouldedcase circuit breaker, you
need to push the handle gently in
the closing direction.
NM8N-125 type,
NM8N-400 / NM8N-630 type,
NM8N-800 type, you need to
gently push the right slot into
the closing direction before
installation
Zhejiang CHINT Electrics Co., Ltd.
Add: No.1, CHINT Road, CHINT Industrial Zone, North Baixiang, Yueqing, Zhejiang Province.
Tel: [phone] 4001177797
Fax: [e-mail]
Web：http://en.chint.com