Heater RIZUR-TERM-B 230 V

Explosion-proof heaters RIZUR-TERM are used to prevent condensation, protect the electric and electronic components from freezing, and maintain the required temperature in heating enclosures (thermoboxes) for equipment, automation cabinets, heated cabinets, various jackets and boxes, including explosion-hazardous areas and external facilities. Heating element is on a basis of PTC ceramics.

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Intended use and application area

Explosion-proof heaters RIZUR-TERM manufactured by OOO «NPO RIZUR» comply with TU-3442-001-12189681-2014 and, depending on configuration, comply with GOST R MEK 60079-0-2011, GOST IEC 60079-1- 2011 for electric equipment with explosion protection “explosion-proof enclosure(d)” and to GOST R MEK 60079-18-2012 for “compound sealing(m)”.

Explosion-proof heaters RIZUR-TERM are used to prevent condensation, protect the electric and electronic components from freezing, and maintain the required temperature in heating enclosures (thermoboxes) for equipment, automation cabinets, heated cabinets, various jackets and boxes, including explosion-hazardous areas and external facilities.

Wide range of design variants that differ in the nominal power allows to choose a suitable version for heating either small spaces (soft enclosure, enclosure, safety shield, etc.) or big ones (block-boxes, warehouses, production departments, work-shops, gas distribution substation, boiler houses, compressor stations, etc.)

The design of RIZUR-TERM heater series is of high quality and thus ensures high-class protection against overheating and voltage surges; the heaters show steady performance and high reliability in field operating conditions. Their warranty time is 36 months, and the average operation time is over 15 years.

Design description

The heater consists of a section-shaped radiator made of aluminum alloy with powder-polymer coating. The shape is designed to optimize heating functionality. Inside the radiator, there is a high-endurance ceramic heating element on a basis of ceramic (PTC) semi-conductors that are sensitive to temperature changes. Electric resistance is in non-linear dependence with the heating temperature – when the temperature rises, the resistance of the ceramic heating element rises significantly, restricting the passing current and stopping the rise in temperature. Thanks to the self-regulating properties of the ceramic heating elements, RIZUR-TERM heaters on the basis of PTC-ceramics do not require stabilizing components or protection against surface overheating which means that the heater is fail-safe and has a longer service life.

The explosion protection is accomplished with a special explosion-proof housing. A special version of RIZUR-TERM heater is available – with the electric heating element and other elements in the metal housing sealed with a sealing compound. Protection from surface overheating is ensured by the area size of the outer surface, corresponding to the nominal power of heat generation, as well as (optional) by an added temperature sensor (analogue or digital, depending on specific versions) to switch off at a set maximum temperature. Thanks to the precise design and high-quality components, we can provide a 10-year warranty for heaters of this series.

The heaters are shipped with mounting components.

Advantages of RIZUR-TERM heaters on the basis of PTC-ceramics:

  1. Self-regulation

  2. Energy efficiency

  3. High power density

  4. Small size

  5. Fail-safety

  6. Absence of additional components that can result in higher risks of equipment failure, for example, the in-built thermostats

  7. Long service life


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Technical specifications

Installation area
General industrial areas
Explosion hazard zones V-1а and V-1g acc. to Electrical installation code (PUE), Ch. 7.3
Explosion-proof marking
general purpose industrial version
1 Exd IIС (T3...T6) Gb X
1 Exmb IIC (T3...T6) Gb X
Heating element power
 300 ... 6000 W
Power supply voltage
230 (±15%) V AC
Temperature on the heater’s surface
In accordance with the temperature rating
T4 - до +135 ºС
T5 - до +100 ºС
T6 - до +85 ºС
-30 … +110°C, an increment of1°С (with digital thermoregulators manufactured by RIZUR)
Temperature maintained
+10...+20°C (with thermoregulators on the base of a bimetallic thermostat)
-40 … +110°C, an increment of 1°С with digital thermoregulators manufactured by OOO "NPO RIZUR"
Ingress protection
IP67 acc. to GOST 14254-96
Insulation strength
min. 1500 V
Insulation resistance 
min. 20 MОhm
Protection against electrical shock 
class 1 acc. to GOST 12.2.007.0
Warranty period
36 months
Average operation time
over 15 years

Order code

1. Model
RIZUR-TERM-B Heater's model

2. Power voltage
300 300 W
400 400 W
500 500 W
600 600 W
700 700 W
800 800 W
900 900 W
1000 1000 W
1100 1100 W
1200 1200 W
1300 1300 W
1400 1400 W
1500 1500 W
1600 1600 W
1700 1700 W
1800 1800 W
1900 1900 W
2000 2000 W
2500 2500 W
3000 3000 W
3500 3500 W
4000 4000 W
5000 5000 W
6000 6000 W
Х Specify the required power (upon an agreement with the manufacturer)
3. Explosion-proof marking
0 general purpose industrial version
Exd 1 Exd llC T3...T6 Gb X
Exm     1 ExmbllC T3...T6 Gb X (upon an agreement with the manufacturer)
4. Temperature rating
Т4 Maximum temperature on the heater’s surface +135ºС
Т5 Maximum temperature on the heater’s surface +100ºС
Т6 Maximum temperature on the heater’s surface +85ºС
Х Specify the temperature on the heater's surface
(upon an agreement with the manufacturer)
5. Supply voltage
230 230 V AC
Х Specify the required supply voltage
(upon an agreement with the manufacturer)
6. Power cable length
1
1 m
2 m
3
3 m
Х Specify the required cable length
7. Power cable protection with a metal hose
О without a metal hose
М with a metal hose
8. Ambient air control, thermoregulator
О Without a thermoregulator
TB

Thermostatic control via a bimetallic thermoregulator RIZUR-TB-FT.

Temperature maintained: +10/+20°С.

Please, specify the order code for the thermoregulator.
C1

Thermoregulator on the basis of a digital control module RIZUR-TB-DCS.

Temperature maintained -40°С…+110°С, with an increment of 1°С.

Please, specify the order code for the thermoregulator.
C2 Adjustable digital control system. Complete with a thermoregulator RIZUR-DCS-2.
Please, specify the order code for the thermoregulator.
*Unless otherwise specified, RIZUR-TB thermoregulator will be offered, with appropriate explosion protection.
9. Fastening
Т Fastening on an end-type bracket
N Fastening on a floor bracket (horizontal surface)
U Fastening on angle bars
X Two types of fastening: on a horizontal surface and on a wall

General assembly drawings table

Power voltage, W Dimension
А, mm
Drawing without fastening
Drawing with fastening
300 180 RIZUR-TERM-B-300 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
400 220 RIZUR-TERM-B-400 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
500 250 RIZUR-TERM-B-500 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
600 280 RIZUR-TERM-B-600 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
700 310 RIZUR-TERM-B-700 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
800 350 RIZUR-TERM-B-800 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
900 400 RIZUR-TERM-B-900 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
1000 450 RIZUR-TERM-B-1000 drawing

on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
1100 500 RIZUR-TERM-B-1100 drawing on angle bars
on an end-type bracket
on a floor bracket (horizontal surface)
1200 280 RIZUR-TERM-B-1200 drawing   on angle bars
on a floor bracket (horizontal surface)
1300 310 RIZUR-TERM-B-1300 drawing   on angle bars
on a floor bracket (horizontal surface)
1400 310 RIZUR-TERM-B-1400 drawing on angle bars
on a floor bracket (horizontal surface)
1500 350 RIZUR-TERM-B-1500 drawing on angle bars
on a floor bracket (horizontal surface)
1600 350 RIZUR-TERM-B-1600 drawing on angle bars
on a floor bracket (horizontal surface)
1700 400 RIZUR-TERM-B-1700 drawing on angle bars
on a floor bracket (horizontal surface)
1800 400 RIZUR-TERM-B-1800 drawing on angle bars
on a floor bracket (horizontal surface)
1900 450 RIZUR-TERM-B-1900 drawing on angle bars
on a floor bracket (horizontal surface)
2000 450 RIZUR-TERM-B-2000 drawing on angle bars
on a floor bracket (horizontal surface)
2500 400 RIZUR-TERM-B-2500 drawing on angle bars
on a floor bracket (horizontal surface)
3000 450 RIZUR-TERM-B-3000 drawing on angle bars
on a floor bracket (horizontal surface)
3500 400 RIZUR-TERM-B-3500 drawing on angle bars
two types of fastening: on a horizontal surface and on a wall
4000 450 RIZUR-TERM-B-4000 drawing on angle bars
two types of fastening on a horizontal surface and on a wall
5000 450 RIZUR-TERM-B-5000 drawing on angle bars
two types of fastening: on a horizontal surface and on a wall
6000 450 RIZUR-TERM-B-6000 drawing on angle bars
two types of fastening: on a horizontal surface and on a wall

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