Change-over switches manually operated suitable for breaking and change-over of two low voltage electrical circuits.

They are made by two standard switches of SD1 16÷63A 3-4 poles series (see relative section for technical characteristics) mechanically interlocked.
Rotary front operation by means of:
> External double insulated door-interlock handle in I and II position, IP65 degree of protection, padlockable with up to three padlocks in O position.
> Direct handle standard.

CONFORMITY TO STANDARDS
• IEC 60947/1-3
• CEI EN 60947/1-3
• UL 508

CERTIFICATES AND APPROVALS
• CESI

Characteristics			SD1

			16A	25A	32A	40A	63A
Rated insulation voltage	Ui	(V)	800	800	800	800	800
Impulse withstand voltage	Uimp	(kV)	8	8	8	8	8
Rated thermal current at 40°C	Ith/Ithe	(A)	16	25	32	40	63
Rated operational current Ie
AC-21A	415V	(A)	16	25	32	40	63
	500V	(A)	16	25	32	40	63
	690V	(A)	16	25	32	40	63
AC-22A	415V	(A)	16	25	32	40	63
	500V	(A)	16	25	32	40	63
	690V	(A)	16	25	32	40	40
AC-23A	415V	(A)	16	25	32	40	40
	500V	(A)	16	25	32	40	40
	690V	(A)	16	25	25	25	25
Rated making capacity at 415V AC23		(A)	160	250	320	400	400
rated breaking capacity at 415V AC23		(A)	128	200	256	320	320
Rated operational power AC23	415V	(kW)	7,5	11	14	15	15
	500V	(kW)	7,5	11	14	15	18,5
	690V	(kW)	7,5	11	14	15	18,5
Short-circuit withstand current 1 sec	(400V)	(kA)	1,1	1,1	1,1	1,1	1,1
Rated fuse short circuit current
Back up fuse gG		(A)	16	25	32	40	63
R.M.S. value		(kA)	50	50	50	50	20
Peak value		(kA)	3,8	4,5	5	5,7	5,7
Mechanical endurance		n.	50000	50000	50000	50000	50000
Electrical endurance		n.	3000	3000	3000	3000	3000
Power loss per pole		W	0,05	0,12	0,32	0,32	0,8
Cable section		mmq	16	16	16	16	16-25
Max terminal torque		Nm	2	2	2	2	2
Operation torque		Nm	1,6	1,6	1,6	1,6	1,6
Auxiliary contacts		(A)	3	3	3	3	3
Net weight 3 poles		(Kg)	0,30	0,30	0,30	0,30	0,30
Net weight 4 poles		(Kg)	0,40	0,40	0,40	0,40	0,40

> SD1 change-over	> drilling template

Type	Rated current	Poles	Direct handle
Type	Rated current	Poles	Code
SD1	16A	3P	193003
	16A	4P	193303
	25A	3P	193013
	25A	4P	193313
	32A	3P	193023
	32A	4P	193323
	40A	3P	193033
	40A	4P	193333
	63A	3P	193043
	63A	4P	193343

Door interlock handle with screw
	black round 19402			black square 19405

Door interlock handle with ring
	black round 19462			black square 19465

Shaft	alluminium	mm	100 19535-100	200 19535-200	300 -
	steel		19534-100	19534-200	19535-300
	with point alluminium		19535-100P	19535-200P	-
	with point steel		19534-100P	19534-200P	19534-300P
4th pole	19320	Earthing neutral			19322
Solid neutral	19321	Auxiliary contacts 1NO+1NC			screw terminals 19429 Faston terminals 19430
Terminal cover kit	3 poles 19424			4th pole 19426

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