Junction box RO-X-Ex

Distribution box type RO-X-Ex is intended for connection and distribution of energetic circuits. It is designed for use in applications of underground parts of mines as well as those parts of surface installations of such mines endangered by firedamp and/or combustible dust (group (I)).

Mechanical protection	IP66
Material	Sheet steel
Temperature range	from -20°C to 40°C
Weight (empty box) - RO-1-Ex - RO-2-Ex	4,2 kg 8,1 kg
Color	grey
Dimensions - RO-1-Exia - RO-2-Exia	160 x 200 x 88 mm 200 x 240 x 102 mm
Cable glands - RO-1-Ex - RO-2-Ex	from M20x1.5 to M32x1.5 from M27x1.5 to M50x1.5
Maks. number of cable glands - RO-1-Exia - RO-2-Exia	8 8 (for M20 to M36) 4 (for M40 to M50)
Cable diameter - RO-1-Ex - RO-2-Ex	from 7 to 24 mm from 15 to 40 mm
Explosion protection (ATEX)	I M2 Ex e I Mb

RO-1-Ex

Cable gland	Cable diameter (mm)		Maximal number of cable side entries
Cable gland	(54543)	(54342)	A	B	C	D
M20x1,5	7 – 16	8 - 12	2	2	2	2
M22x1,5	9 – 16	8 - 14	2	2	2	2
M25x1,5	9 – 17	8 - 16	2	2	2	2
M27x1,5	15 – 21	/	2	2	2	2
M28x1,5	15 – 21	13 - 19	2	2	2	2
M32x1,5	15 – 24	13 - 24	2	2	2	2

Terminal UT/UT-PE	Maximal number of terminals	Conductor cross section (mm²)
Terminal UT/UT-PE	Maximal number of terminals	solid	rigit	2x solid	2x rigit
UT 2,5	14	0,75 - 4	0,75 – 2,5	0,75 - 1,5	0,75 – 1,5
UT 4	12	1,0 – 6	1,0 – 4	1,0 - 1,5	1,0 – 1,5
UT 6	10	1,5 – 10	1,5 – 6	1,5 - 2,5	1,5 – 2,5
UT 8	8	2,5 –1 6	2,5 – 10	2,5 - 4	2,5 – 4

RO-2-Ex

Cable gland	Cable diameter (mm)		Maximal number of cable side entries
Cable gland	(54543)	(54342)	A	B	C	D
M27x1,5	15 - 21	/	2	2	2	2
M28x1,5	15 - 21	13 - 19	2	2	2	2
M32x1,5	15 – 24	13 - 24	2	2	2	2
M36x1,5	21 - 28	18 - 28	2	2	2	2
M40x1,5	19 – 32	18 - 32	1	1	1	1
M50x1,5	28 - 38	28 - 40	1	1	1	1

Terminal UT/UT-PE	Maximal number of terminals	Conductor cross section (mm²)
Terminal UT/UT-PE	Maximal number of terminals	solid	rigit	2x solid	2x rigit
UT 6	12	1,5 - 10	1,5 – 6	1,5 - 2,5	1,5 – 2,5
UT 10	10	2,5 – 16	2,5 - 10	2,5 - 4	2,5 – 4
UT 16	8	2,5 – 25	2,5 – 16	2,5 - 6	2,5 – 4