background image

Installation and operating instructions

for miniature circuit-breakers in DMCB 2 series

These  installation  and  operating  instructions  are  aimed  at  qualified  electrical 

specialists. The installation of devices of this type is not appropriate for electrical 
laypersons due to the considerable potential dangers. The installation and operating 
instructions must be retained, so that they can be referred to at a later stage. The 
operator of the electrical system must be informed about the application and 
function of this protective device.

Application instructions and warnings

Devices with visible damage must not be installed or used.

Intended use

DMCB 2 series miniature circuit-breakers provide protection against overcurrents in 

electrical systems by automatically switching off the power in the event of a fault 

e. g. in accordance with VDE 0100 part 410 (IEC 60364-4-41). They are designed as 
modular DIN rail components for integration in distribution boards or unit housings. 
Protection against direct contact according to protection class 2 must be ensured 
with the assistance of the associated device covers.

Mounting

Assembly only requires quick fastening on mounting rails. The connection must be 
made in accordance with the wiring diagram. Power is supplied either from below 
or from above. 

Warranty

All professionally installed, unaltered devices are covered by warranty during the 
statutory warranty period from the day of purchase by the end user. The warranty is 
not applicable to damage incurred during transport or caused by short-circuit, over-
loading or improper use. In the event of defects in workmanship or material being dis-
covered within the warranty period, the company will provide repair or replacement 
free of charge. The warranty will be rendered null and void if the device is opened 
without authorisation.

Technical data

DMCB 2
Rated AC voltage

230 V/400 V

Rated DC voltage

60 V

Rated frequency

50/60 Hz

Load circuit

Short-circuit back-up fuse (SCPD)

200 A

Back-up fuse type

gL, gG

Back-up fuse

Safety fuse as per DIN EN 0636

Screw terminal with strain-relief clamp

Protective cover

DGUV 3, VDE 0660-514, 

 

finger and back-of-hand proof

Maximum number of conductors per 
terminal

2

Tightening torque

2.5 – 3 Nm

Terminal cross-section

2.5 to 50 mm

2

Product standard

EN 60947-2

Doepke

3932166 

|

 07/2015 

Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden

DE EN

Reviews: