3.2) One year after short-circuit trip Six months after short-circuit trip
External visual check and inspection
ofthe power section
One year Six months
Operating mechanism maintenance (par.1 Prelim inary operations
- Remove the flange (1) the release, turning the screws (2) shown the figures
- Remove the front escutcheon plate (3) removing the four screws (4)
- Remove, present, one both side guards (5) removing the front (6) and lateral (7) screws
- Remove the arcing chambers (8) removing the screws (9). 8.3. operations 1000 operations/hour
E1 B-N 800 30
1000-1250 30
1600 30
E2 B-N-S 800 30
1000-1250 30
1600 30
2000 30
E2 1250 20
1600 20
E3 N-S-H-V 800 20
1000-1250 20
1600 20
2000 20
2500 20
3200 20
E3 2000 1. 8.
Model 2234 Apparatus Scale
L 2778
Doc-Na 1SDH000460R0002
Page No. operations Frequency 440 690 Frequency
[A] 1000 operations/hour No.2 ainte m
M aintenance operations Interval
Installation normal rooms Installations dusty polluted rooms
General inspection (see par.4) One year 10000 operations Six months 10000 operations
Checking trip ofthe release One year Six months
8.With regular maintenance, SACE Emax circuit-breakers, either with without geared motor, can withstand the following operation without
replacement parts.8 1.5 10
(*) With regular ordinary maintenance
8. operations 1000 No.5 20
2500 1.3 inte tio s
8.3.3 20
E4 S-H-V 3200 10
4000 10
E6 H-V 3200 10
4000 10
5000 10
6300 1.
Rated uninterrupted current echanical life (*) Electrical life
Iu (40 °C) No.
20/158
