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User instructions
Function
They are remote control auxiliaries for modular protection devices (MCB, RCD, RCBO).
These products (MZ 900 et MZ 910) allow :
- to operate by remote control the closing and opening contacts of the associated product (MCB,
RCD and RCBO,
- to indicate the state of contacts and the fault of the associated product.
The product MZ 910 has a further function which allows a second automatic tripping when fault current.
Operating principle
Position of
front side
selector
d
• The "on", "off", "
• 1 ≤ number of faults < 3 : "on" is clamped for 3 mn
after fault.
• Number of faults = 3 : The product clamps "on".
To unjam it remotely, "
"off & on"
To unjam it locally, we must keep the front selector on
position "
• The "on", "off", "
and the automatic resetting ("auto") is activated.
• If fault occurs in 2 sec.after closing, this fault is entered
in the accounts.
1 ≤ number of faults < 3 : "on" and the automatic resetting
are clamped for 3 mn after fault.
Number of faults = 3 : the product clamps "on" and the
automatic resetting.
"off & on +
To unjam them remotely, "
auto"
(+ "on" if the automatic resetting is activated) .
(only on
To unjam them locally, we must keep the front selector
MZ 910)
+ reset" position (for 5s) until a green light indicator
"
appears.
• If fault appears after the 2 seconds after closing, this
fault is not entered in the accounts and the number of
faults is resets.
"on" and the automatic reset are clamped for 3 mn after
each fault.
Position of
front side
selector
• The "on", "off", "
• The number of faults is not limited.
"off & on"
"on" is never clamped, and is available immediately after a
fault.
• "on", "off", "
and the automatic resetting ("auto") is activated.
"off & on +
• The number of faults is not limited. "on" and the
auto"
automatic resetting are never clamped. "on" is available
(only on
immediately after fault.
MZ 910)
The automatic resetting is clamped for 3 mn after each
fault.
GB
Position of "number of faults" side selector
Functioning
+ reset" and " " "are operational.
+ reset" must be activated.
+ reset" (for 5 s.) until a green light appears.
+ reset" and "
+ reset" must be activated
Position of "number of faults" side selector "unlimited"
Functioning
+ reset" and "
+ reset" and "
MZ900
Remote control auxiliary
MZ 910
Auto reclosing remote control
auxiliary
" are operational
" are operational.
" are operational.
➅
"3x"
Indicator light
• Green : no fault.
• Amber : 1 fault.
• Fixed red :
last fault allowed.
• Intermittent red : 3 faults
(jammed product).
• Green : no fault.
• Amber : 1 fault.
• Fixed red :
last fault allowed.
• Intermittent red : 3 faults
(jammed product).
Indicator light
Fixed green or intermittent.
Fixed green or intermittent.
c
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