MERZ - Cam Switches

02. May 2022

Cam Switches - Air conditioning/ventilation sector

The flexible MERZ cam switch as step switches for air conditioning and residential ventilation systems.

Available in 2 variants for: flush-mounted installation 9110 and surface-mounted 9111
Standard and customer-specific switching programs
MERZ cam switch series MN105
Cover frame and plate PEHA Badora pure white (PW)
Innovation in series and customer-specific individuality

MERZ Cam Switches (2.2 MB)

SPECIFICATIONS

Short overview specifications

Acc. IEC 60947-3, EN 60947-3	AC21	Unit	MN 105
Rated operational current I_e		A	25
Rated operational voltage U_e		V	690
Rated uninterrupted current I_th	open	A	25
Rated uninterrupted current I_the	encapsulated	A	25
Rated insulation voltage U_i Insulation group C acc. VDE 0110		V	690
Rated impulse withstand voltage U_imp (III/3)		kV	4

show more technical data

Making/breaking capacity	Utilisation category	AC3
		230 V 3~	kW	3
		400 V 3~	kW	5,5
		690 V 3~	kW	5,5
Single-phase motor		230 V 3~	kW	2,2
		400 V 3~	kW	3

Making/breaking capacity	Utilisation category	AC23A(B)
Motor Switch		230 V 3~	kW	4
Main Switch		400 V 3~	kW	7,5
Maintenance Switch		690 V 3~	kW	7,5
Short-circuit capacity
Max. fuse rating (gG-Char.)			A	25
Rated conditional short-circuit current			kAeff	10
Rated short-time withstand current I_{cw 1sec}			A	240
Rated short circuit making capacity I _cm			A	-
Isolating characteristics up to			V~	500
Terminal cross section	solid or multi-stranded	min./max.	mm²	1,0 - 4
	finely stranded with ferrule	min./max.	mm²	1,0 - 2,5
Terminal screws				M3
Torque terminal screws			NM	0,8
Mechanical life		operating cycles		1x10⁶
Ambient temperature max./min.	open	min./max.	°C	+50/-25
	encapsulated	min./max.	°C	+40/-25

Design

DESIGN flush-mounted 9110

DESIGN surface-mount 9111

Flush-mounted version
with labeling according to circuit diagram V_ _ _ / 155.
3-stage without zero position

Flush-mounted version
MN105 without cover

Flush-mounted version
with labeling according to circuit diagram V_ _ _ / 155.
3-stage without zero position

Surface-mounted version
with labeling according to circuit diagram V_ _ _ / 155.
3-stage without zero position

Surface-mounted version
MN105 without cover

Surface-mounted version
with labeling according to circuit diagram V_ _ _ / 155.
3-stage without zero position

CONTACT DIAGRAMS

Here you can see a small selection of possible circuit diagrams. We will also find the right solution for your project! Please feel free to contact us.