VDR Silicon Carbide Varistors

Series 400 S / SD / SDL and 410 SB

Shapes:
S	Disc, without wire, unlacquered
SD	Disc, with wire connection, unlacquered
SDL	Disc, with wire connection, lacquered
410 SB	Disc with hole

Varistors of Series 410 SB can be supplied with a fixture as shown in the diagram.

These types can also be supplied in columns of up to 12 discs, in parallel or series assembly.

The columns can be supplied with 70 x 70 x 0.5 mm brass heat dissipators.

Columns without heat dissipators can be supplied with a protective coating of epoxy resin.

Type 410 SB Assembly:

Max. Power Dissipation at Δt = 80 °K | P = 3W | Mean Impact Strength = 250 J

Varistor Type	Operating Voltage V=bzw.V~	Max. Op. Voltage V=bzw.V~	Measuring Voltage V=+/-20%	Measuring Current (mA)	B-Value Approx.	Exponent n Approx.	Height (mm)
400S/SD/SDL 30/2	8	8.8	12	100	30	2	2 - 3
400S/SD/SDL 40/3	11	12	20	100	40	3	2 - 3
400S/SD/SDL 60/3	16	18	30	100	60	4	2 - 3
400S/SD/SDL 80/4	22	24	45	100	80	4	2 - 3
400S/SD/SDL 100/4	25	27	35	10	100	4	2 - 3
400S/SD/SDL 120/4	30	33	45	10	120	4	2 - 3
400S/SD/SDL 150/4	35	38	55	10	150	5	2 - 3
400S/SD/SDL 180/4	45	49	68	10	180	5	2 - 3
400S/SD/SDL 220/5	60	66	95	10	220	5	2 - 3
400S/SD/SDL 280/5	75	82	125	10	280	5	3 - 4
400S/SD/SDL 80W	80	88	145	10	310	5	3 - 4
400S/SD/SDL 340/6	95	104	160	10	340	6	3 - 4
400S/SD/SDL 400/6	105	115	180	10	400	6	3 - 4
400S/SD/SDL 110W	110	121	120V~	4 - 8	400	6	3 - 4
400S/SD/SDL 480/6	120	132	220	10	480	6	3 - 4
400S/SD/SDL 550/6	140	154	250	10	550	6	3 - 5
400S/SD/SDL 650/6	160	176	300	10	650	6	4 - 7
400S/SD/SDL 800/6	200	220	260	1	800	6	4 - 7
400S/SD/SDL 220W	220	242	240V~	2 - 4	800	6	4 - 7
400S/SD/SDL 1.0K/6	240	264	320	1	1000	6	4 - 7
400S/SD/SDL 1.2K/7	270	297	400	1	1200	7	4 - 7
400S/SD/SDL 1.5K/7	360	396	550	1	1500	7	4 - 7
400S/SD/SDL 380W	380	420	420V~	1 - 2	1400	7	4 - 7
400S/SD/SDL 1.8K/7	380	420	600	1	1800	7	4 - 7

Below is the U / I Characteristic for Series 400S / SD / SDL and 410 SB