Name: RTJZ Volcanic Rock Silicate Mineral Fire-Resistant Casting Type Composite Insulated Busway
Brand: ZHERutong
Availability: InStock
Rating: 5 (1 reviews)

Description

Product Features

● Low-voltage products comply with IEC 60439/61439 standards

● Compact size, easy installation, no toxic gas emission

● 99.9% pure copper conductor with conductivity exceeding 98% IACS

● Low voltage drop, high short-circuit current withstand capacity, 20% overload for 2 hours

● Protection rating per IEC 60529: IP68, capable of long-term submerged operation, with impact resistance up to IK10

● Fire-resistant performance compliant with IEC 60331-21 (950°C for 3 hours) and CNS14286 (840°C for 3 hours)

● Explosion-proof certification: EN50028 No.: Exm II

● Molded with volcanic rock silicate minerals and minimal hardener, offering excellent insulation and heat dissipation (bus temperature rise <55K at 40° C maximum ambient temperature)

● Low electromagnetic interference characteristics

● Class H 180° C insulation material

● Proven performance record over 40 years, with certified aging tests confirming service life exceeding 50 years

● Maintenance-free operation

Schematic Diagram Of Busbar Path

CNS 14286

Withstand Fire Test

IP68

Degree of protection

IK10

Mechanical lmpacts

EMC

Elctomagnetic compatibility

Standard Compliance

● GB7251.2-2006

● GB7251.6-2015/IEC61439-6:2012

● XF 537-2005 Test Methods for Flame Retardant and Fire Resistance Performance of Busway Trunking Systems (Busways)

● GB/T9978.1 relevant industry standards.

Technical Specifications

● Rated Voltage (V):AC1000V。

● Rated Current (A):400A~6300A。

● Frequency (Hz):50/60。

● System Types:3Ф4W、3Ф5W。

● Conductor Material: Copper conductor (Purity: 99.97%, Conductivity: ≥ 98% IACS) and Aluminum conductor.

● Electrical Characteristics of each individual component produced by Rutong Electric (Length below 4 meters):

* Standards Compliance: XF 537-2005, GB 7251.6-2015.

* Insulation Withstand Voltage: Withstands AC 5kV/1min between phases; Insulation resistance > 2GΩ at DC 1kV between phases.

* Fire Resistance: Complies with XF 537-2005, withstanding 950° C - 1100° C for 3 hours.

* Temperature Rise: Busbar temperature rise ≤ 60°C at average daily temperature of 35° C and maximum daily temperature of 40° C.

* Protection Rating: Complies with IEC 60529 / GB 4208, achieving IP68.

* Mechanical Strength: Complies with IEC 60068-2-75, IK10 rating.

* Grounding Characteristics: Rutong's low-voltage fire-resistant busway system utilizes an internal grounding conductor (System Grounding), offering the advantages of stable ground voltage and reduced operational safety risks.

Technical Specifications

● Suitable for indoor and outdoor locations up to 2000m above sea level.

● Ambient temperature: -50℃ to 70℃ .

● Ambient humidity: 0% to 100%.

The busway joint utilizes a 4-piece active compression sealing system. When the torque-limited shear bolts in the bridge-type joint are tightened to the specified value (causing the bolt heads to snap off), the indicator label will detach. Following the cover tightening procedure, the seal cover is then compressed and secured onto the busway. The solid silicone gaskets at the joint and under the cover fully fill and seal all gaps, ensuring reliable IP68-rated waterproof integrity at the joint.

RTJZ Cast IP68 Busway with Tap-off Unit (Plug-in Box)

Product features: the product has obtained the first 3C certification in China and reached the protection level IP68

Technical parameter

Fire-rated busway systems are primarily used in fire protection power distribution circuits, generator backup power supplies, and fire-prone electrical applications to ensure emergency power sources maintain operation during fire events.

Product Specifications
Rated Current	400A	630A	800A	1000A	1250A	1600A	2000A	2500A	3200A	4000A	5000A	6300A
Code	4	6	8	10	12	16	20	25	32	40	50	63
Rated Operational Voltage	V
	1000
Rated Insulation Voltage	V
	1000
Rated Short-Time Withstand Current	KA		30	30	30	30	30	80	80	80	80	100	100
Rated Peak Withstand Current	KA		63	63	63	63	63	176	176	176	176	220	220
Frequency	Hz		50Hz
Protection Rating	IP		IP68

Conductor Impedance
Resistance (Rt)	mΩ/m	0.16	0.1	0.07	0.05	0.04	0.03	0.03	0.02	0.02	0.01	0.01	0.01
Reactance (X)	mΩ/m	0.09	0.09	0.03	0.02	0.01	0.01	0.01	0.01	0.01	0.01	0	0
Impedance (Z)	mΩ/m	0.18	0.13	0.07	0.05	0.04	0.03	0.03	0.02	0.02	0.01	0.01	0.01

Overall Dimensions
H	mm	70	80	80	110	110	130	130	150	170	190	210	230
A (Four-Wire System)	mm	101
B (Five-Wire System)	mm	101
Weight (Four-Wire System)	kg/m	38	46	51	59	72	83	99	122	148	181	227	283
Weight (Five-Wire System)	kg/m	43	52	57	67	81	93	111	138	167	203	255	318

Function Uint

Straight Section

Rated Current (A)	B (mm)	A (mm)	H (mm)	kg/kg/m	Diagram (mm)
400	101	101	72	43	A
630	101	101	80	52	A
800	101	101	80	57	A
1000	101	101	110	67	A
1250	101	101	110	81	A
1600	101	101	130	93	A
2000	101	101	130	111	A
2500	101	101	150	138	A
3200	101	101	170	167	A
4000	101	101	190	203	A
5000	101	101	210	255	A
6300	101	101	230	318	A

Specification Selection Table (1000W)
Product Model	Rated Current	Overall Dimensions	Thermal Withstand Capacity	Dynamic Withstand Capacity	Rdc20	Component Weight
RTJZ	400A	In	65	143	71.6	43
RTJZ	500A	W×H	65	143	52.1	48
RTJZ	630A	101×72	65	143	40.9	52
RTJZ	800A	101×80	65	143	31.8	57
RTJZ	1000A	101×110	65	143	24.9	67
RTJZ	1250A	101×110	65	143	20.4	81
RTJZ	1400A	101×110	85	193	15.1	86
RTJZ	1600A	101×130	85	193	12.4	93
RTJZ	2000A	101×130	100	220	10.2	111
RTJZ	2500A	101×150	100	220	9.88	138
RTJZ	3200A	101×170	100	220	7.12	167
RTJZ	4000A	101×190	100	220	6.14	203

Function Uint

Rated Current (A)	A	B	C	M	Type
400	25	50		Φ14×20	A
630	25	50		Φ14×20	A
800	25	50		Φ14×20	A
1000	25	50	50	Φ14×20	A
1250	25	50	50	Φ14×20	B
1600	25	50	50	Φ14×20	B
2000	25	50	50	Φ14×20	C
2500	25	50	50	Φ14×20	C
3150	25	50	50	Φ14×20	D
4000	25	50	50	Φ14×20	C
5000	25	50	50	Φ14×20	D
6300	25	50	50	Φ14×20	D

Straight Unit

Type: RE

Length: L=1000mm~4000mm(Max)

Type: HL1 / HL2

Length: L=650mm(Max) / L=1650mm(Max)

Type: HL1 / HL2

Length: L=650mm(Max) / L=1650mm(Max)

Type: TL2

Length: L1=L2=L3=350mm

Type: TB2

Length: L1=L2=L3=350mm

Type: XR1 / XR2

Length: L1+L2+L3=1000mm / L1+L2+L3=2000mm

Type: XL1 / XL2

Length: L1+L2+L3=1000mm / L1+L2+L3=2000mm

Type: ZB1 / ZB2

Length: L1+L2+L3=1000mm / L1+L2+L3=2000mm

Type: ZL1 / ZL2

Length: L1+L2+L3=1000mm / L1+L2+L3=2000mm

Type: EX

Length: L=1000mm

Type: PC1

Length: L=1200mm

Type: TF1

Length: L=1200mm

Product Installation Instructions

Specifications	External dimension		Hanger installation spacing dimension		Minimum spacing of bus bars
	B/H	Horizontal installation	Vertical installation	Discharge type of bus bar		Distance from through wall hole

LA02	104×60	1500	4000	196	100	50
LA04	104×80
LA08	104×120
LA12	104×160
LA16	104×200
LB08	168×120			132
LB12	168×160
LB16	168×200

Note: During installation of Rutong Electric components, hanger spacing can be adjusted according to on-site requirements.

Standard for Horizontal Hangers of Low-Voltage Busways

1. The spacing for hanger installation shall comply with the above standards. If on-site conditions prevent standard implementation, adjustments may be made based on actual conditions, provided they meet the minimum busway spacing requirements specified in the Product Installation Instructions (Page 27).

2. The standard installation space required for the busway is as shown in the diagram. An additional safety clearance of 100mm + casting clearance of 270mm (total 370mm) must be maintained above the busway.

3. One L-shaped retaining plate set (two plates) shall be installed per unit.

Item No.	Product Name	Specs	Remarks
①	Sleeve Anchor with Internal Thread	1/2"*2"	Galvanized product (for installation works)
②	Full Threaded Rod	1/2"	Galvanized product (for installation works)
③	Busbar Body		Rutong Electric
④	C Channel Steel	2t4141mm	Galvanized product (for installation works)
⑤	L-Shaped Retaining Plate	2.3t8040	Galvanized product

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ZHERUTONG provides high-performance fire-resistant busway systems engineered for critical power distribution applications. With IP68 protection, 950°C fire resistance, and over 40 years of proven reliability, our solutions are trusted in demanding industrial and emergency environments.

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Product

RTJZ Volcanic Rock Silicate Mineral Fire-Resistant Casting Type Composite Insulated Busway

Description

Product Features

Schematic Diagram Of Busbar Path

Standard Compliance

Technical Specifications

Technical Specifications

RTJZ Cast IP68 Busway with Tap-off Unit (Plug-in Box)

Technical parameter

Function Uint

Straight Section

Function Uint

Straight Unit

Product Installation Instructions

Standard for Horizontal Hangers of Low-Voltage Busways

Looking for a Reliable Fire-Resistant Busway Manufacturer?

Busway & Busbar Technical Resources