Siemens SIRIUS 3RH Series - 3 RH2 Contactor Relays; Permissible Mounting Position, Positively Driven Operation of Contacts and Contact Reliability of 3 RH2 Contactor Relays (4- and 8-Pole)

SIRIUS 3RT2 contactors/contactor assemblies
2.8 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
271
2.8.4 3RH2 contactor relays
2.8.4.1 Permissible mounting position, positively driven operation of contacts and contact
reliability of 3RH2 contactor relays (4- and 8-pole)
Table 2- 110 Permissible mounting position of 3RH2 contactor relays
Type 3RH2
Size S00
Permissible mounting position
The contactors are dimensioned for
operation on a vertical mounting plane.
 AC and DC operation
rrr
 AC operation
Special version required.
Vertical mounting position:
 DC operation
Standard version (please contact your local
Siemens office for advice regarding
3RH21 22-2K.40 coupling relays with
extended operating range)
Table 2- 111 Positively driven operation of contacts in the case of 3RH2 contactor relays
Type 3RH2
Size S00
Positively driven operation of contacts in the case of contactor relays
3RH2:
Yes, in the basic device and the auxiliary switch block as well
as between the basic device and the snap-on auxiliary switch
block (removable) in accordance with:
Explanation:
There is positively driven operation if it is ensured that the
NC contact and the NO contact cannot be closed at the
same time.
 ZH 1/457
 DIN EN 60947-5-1, Annex L
ZH1/457
Safety rules for control units on power-operated presses
in the metalworking industry.
3RH22:
Yes, in the basic device and the auxiliary switch block as well
as between the basic device and the snap-on auxiliary switch
block (permanently mounted) in accordance with:
DIN EN 60947-5-1, Annex L
Low-voltage switchgear and controlgear Specific
requirements to be met by positively driven contacts.
 ZH 1/457
 DIN EN 60947-5-1, Annex L