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OPERATION OF ELECTRONIC CIRCUIT BREAKER (ECB) FOR PROTECTION OF CHARGER & BATTERY WIRING
Max. allowable
load amps
(x I rated)
Short circuit condition,
ECB trips within 2ms
7x I
300ms max.
7
2.5
2ms
ECB automatically resets
The ECB will operate on overcurrent as above & is also activated for the low voltage disconnect function on
mains fail (no input power). It will reset when input power is restored, or can be manually reset by briefly
shorting the BAT- and LOAD- terminals together when there is no input power.
CONNECTION LAYOUTS
SR250 CONNECTION LAYOUT
(Plug in/screw terminals)
AC INPUT
ALARMS
SR250 CONNECTION LAYOUT
(Stud terminals)
AC INPUT
ALARMS
Specifications are subject to change without notice. No liability accepted for errors or omissions.
INPUT POWER ON
for
rated
2.5 x I
peak
rated
current allowed
300ms
I
= 1x I
PSU
rated
I
= 1.5x I
BAT
rated
LOAD
BATT
+
+
-
-
+ COM
LOAD-
BATT-
Max. allowable
load amps
(x I rated)
Short circuit condition,
ECB trips within 2ms
6
1.5
Time
2ms
ECB trips & latches off
until input power is
restored
NOTE: LOAD+ / BATT+ terminals
are linked internally and are connect-
ed to the +COM terminal on the stud
connection versions.
SR500/750 CONNECTION LAYOUT
Stud terminals)
INPUT POWER OFF
6x I
rated
for 300ms max.
1.5 x I
until LV
rated
disconnect operates
300ms
I
= 0
PSU
I
= 1.5x I
BAT
rated
+ COM
LOAD-
BATT-
ALARMS
Time
8
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