CX1

Explosion Proof Heater
kW Range: 0.75 to 7.6 kW
Voltage: 120 / 208 / 240 / 277 / 380 / 400 / 415 / 480 / 600V
Phase: 1Ø
Mounting: Wall or Ceiling Mount
Control: Optional Built In Thermostat
Ingress Protection: IP55
Certification: UL Certified for Hazardous Locations
Warranty: Refer to King Warranty Terms

Submittal Instructions

Overview

Compact explosion proof air heater designed for hazardous location heating and demanding oil and gas applications.

The CX1 Ruffneck ProVector explosion proof heater is engineered for dependable heat in hazardous locations, including oil and gas well drilling environments where reliability is critical. The CX1 combines high velocity airflow, compact cabinet lengths, a sloped top 14 gauge steel cabinet, Incoloy 840 sheathed heating elements, radial embossed aluminum plate fins, galvanized steel mounting brackets, and IP55 moisture ingress protection. Optional built in thermostat configurations and optional stainless steel construction provide added flexibility for corrosive, confined, and demanding industrial applications.

Ideal Spaces

Oil and gas drilling sites
Hazardous industrial locations
Refineries
Processing areas
Remote equipment buildings

Features & Benefits

Sloped top cabinet
No exposed copper or brass
High velocity airflow
14 gauge steel cabinet
Available stainless steel construction
Shortest cabinet lengths available
Optional built in thermostat
Incoloy 840 heating elements
Radial embossed aluminum plate fins
Galvanized steel mounting brackets
IP55 moisture ingress protection
Approvals for Groups A, B, C, D; IIA, IIB, and IIC available

Models

Ordering Information

MODEL	kW (BTU/hr)	UNIT VOLTAGE (VOLTS)	BASIC UNIT	GAS GROUP IIB+H2 W/O T'STAT	GAS GROUP IIB W/ T'STAT	GAS GROUP IIC W/O T'STAT	GAS GROUP IIC W/ T'STAT	SUPPLY WIRE SIZE (AWG)***	UNIT CURRENT (AMPS)	MAX. CIRCUIT FUSE (AMPs)*	CABINET LENGTH in(mm)	TEMP. CODE
CX1-120160-012-T3	1.2	120	•	•	•	•	•	12	10	15	31.3 (796)	T3
CX1-120160-018-T3	1.8	120	•	•	•	•	•	12	15	20	31.3 (796)	T3
CX1-208160-012-T3	1.2	208	•	•	•	•	•	12	5.8	15	31.3 (796)	T3
CX1-208160-018-T3	1.8	208	•	•	•	•	•	12	8.7	15	31.3 (796)	T3
CX1-208160-036-T3**	3.6	208	•	•	•	•	•	12	17.3	20	49.5 (1256)	T3
CX1-208160-048-T2A	4.8	208	•	•		•	•	8	23.1	25	49.5 (1256)	T2A
CX1-208160-076-T2A	7.6	208	•	•		•		8	36.5	40	59.5 (1511)	T2A
CX1-240160-012-T3	1.2	240	•	•	•	•	•	12	5	15	31.3 (796)	T3
CX1-240160-018-T3	1.8	240	•	•	•	•	•	12	7.5	15	31.3 (796)	T3
CX1-240160-036-T3**	3.6	240	•	•	•	•	•	12	15	20	49.5 (1256)	T3
CX1-240160-048-T2A	4.8	240	•	•	•	•	•	10	20	25	49.5 (1256)	T2A
CX1-240160-076-T2A	7.6	240	•	•		•		8	31.7	35	59.5 (1511)	T2A
CX1-277160-012-T3	1.2	277	•	•	•	•	•	12	4.3	15	31.3 (796)	T3
CX1-277160-018-T3	1.8	277	•	•	•	•	•	12	6.5	15	31.3 (796)	T3
CX1-277160-036-T3**	3.6	277	•	•	•	•	•	12	13	15	49.5 (1256)	T3
CX1-277160-048-T2A	4.8	277	•	•	•	•	•	12	17.3	20	49.5 (1256)	T2A
CX1-277160-076-T2A	7.6	277	•	•		•		8	27.4	30	59.5 (1511)	T2A
CX1-380160-0075-T3	0.75	380	•	•	•			12	2	15	31.3 (796)	T3
CX1-380160-0113-T3	1.13	380	•	•	•			12	3	15	31.3 (796)	T3
CX1-380160-012-T3	1.2	380	•	•	•	•	•	12	3.2	15	31.3 (796)	T3
CX1-380160-018-T3	1.8	380	•	•	•	•	•	12	4.7	15	31.3 (796)	T3
CX1-380160-0226-T2A	2.26	380	•	•	•			12	5.9	15	31.3 (796)	T2A
CX1-380160-0301-T3	3.01	380	•	•	•			12	7.9	15	49.5 (1256)	T3
CX1-380160-036-T3**	3.6	380	•	•	•	•	•	12	9.5	15	49.5 (1256)	T3
CX1-380160-0476-T2A	4.76	380	•	•	•			10	12.5	15	59.5 (1511)	T2A
CX1-380160-048-T2A	4.8	380	•	•	•	•	•	12	12.6	15	49.5 (1256)	T2A
CX1-380160-076-T2A	7.6	380	•	•	•	•		10	20	25	59.5 (1511)	T2A
CX1-400160-0083-T3	0.83	400	•	•	•			12	2.1	15	31.3 (796)	T3
CX1-400160-012-T3	1.2	400	•	•	•	•	•	12	3	15	31.3 (796)	T3
CX1-400160-0125-T3	1.25	400	•	•	•			12	3.1	15	31.3 (796)	T3
CX1-400160-018-T3	1.8	400	•	•	•	•	•	12	4.5	15	31.3 (796)	T3
CX1-400160-025-T2A	2.5	400	•	•	•			12	6.3	15	31.3 (796)	T2A
CX1-400160-0333-T3	3.33	400	•	•	•			12	8.3	15	49.5 (1256)	T3
CX1-400160-036-T3**	3.6	400	•	•	•	•	•	12	9	15	49.5 (1256)	T3
CX1-400160-048-T2A	4.8	400	•	•	•	•	•	12	12	15	49.5 (1256)	T2A
CX1-400160-0528-T2A	5.28	400	•	•	•			10	13.2	15	59.5 (1511)	T2A
CX1-400160-076-T2A	7.6	400	•	•	•	•		10	19	20	59.5 (1511)	T2A
CX1-415160-009-T3	0.9	415	•	•	•			12	2.2	15	31.3 (796)	T3
CX1-415160-012-T3	1.2	415	•	•	•	•	•	12	2.9	15	31.3 (796)	T3
CX1-415160-0135-T3	1.35	415	•	•	•			12	3.3	15	31.3 (796)	T3
CX1-415160-018-T3	1.8	415	•	•	•	•	•	12	4.3	15	31.3 (796)	T3
CX1-415160-0269-T2A	2.69	415	•	•	•			12	6.5	15	31.3 (796)	T2A
CX1-415160-0359-T3	3.59	415	•	•	•			12	8.7	15	49.5 (1256)	T3
CX1-415160-036-T3**	3.6	415	•	•	•	•	•	12	8.7	15	49.5 (1256)	T3
CX1-415160-048-T2A	4.8	415	•	•	•	•	•	12	11.6	15	49.5 (1256)	T2A
CX1-415160-0568-T2A	5.68	415	•	•	•			10	13.7	15	59.5 (1511)	T2A
CX1-415160-076-T2A	7.6	415	•	•	•	•		10	18.3	20	59.5 (1511)	T2A
CX1-480160-012-T3	1.2	480	•	•	•	•	•	12	2.5	15	31.3 (796)	T3
CX1-480160-018-T3	1.8	480	•	•	•	•	•	12	3.8	15	31.3 (796)	T3
CX1-480160-036-T3**	3.6	480	•	•	•	•	•	12	7.5	15	49.5 (1256)	T3
CX1-480160-048-T2A	4.8	480	•	•	•	•	•	12	10	15	49.5 (1256)	T2A
CX1-480160-076-T2A	7.6	480	•	•	•	•		10	15.8	20	59.5 (1511)	T2A
CX1-600160-012-T3	1.2	600	•	•		•	•	12	2	15	31.3 (796)	T3
CX1-600160-018-T3	1.8	600	•	•		•	•	12	3	15	31.3 (796)	T3
CX1-600160-036-T3**	3.6	600	•	•		•	•	12	6	15	49.5 (1256)	T3
CX1-600160-048-T2A	4.8	600	•	•		•	•	12	8	15	49.5 (1256)	T2A
CX1-600160-076-T2A	7.6	600	•	•		•	•	12	12.7	15	59.5 (1511)	T2A

* Or equivalent breaker as per local electrical inspection authority requirements.

** For 3.6 kW heaters rated T3 cabinet length is 49.5” (1256mm). 3.6 kW heaters rated T2A cabinet length is 31.3” (796mm)

*** Ensure supply wire size adheres to applicable local and national electrical codes

Specifications

NOMINAL WATTAGE (kW)	CABINET LENGTH ?B?	NET WEIGHT (lbs)	SHIPPING WEIGHT (lbs)
0.75 - 2.69 & 3.6 (T2a)	31.3	55.3	65
3.01 - 3.59 & 3.6 (T3) & 4.8	49.4	80.7	92.8
4.76, 5.28 - 7.6	59.5	95	105

Specifications

Furnish and install King Electric CX1 Series explosion proof heater. Unit shall include hazardous location construction, high velocity airflow, sloped top 14 gauge steel cabinet, two Incoloy 840 sheathed heating elements, radial embossed aluminum plate fins, galvanized steel mounting brackets, IP55 moisture ingress protection, and optional built in thermostat where specified. Heater shall be UL certified for specified hazardous location classifications.

Electrical

Voltage: 120 / 208 / 240 / 277 / 380 / 400 / 415 / 480 / 600V
Phase: 1Ø
kW Range: 0.75 to 7.6 kW
Temperature Codes: T2A or T3, Model Dependent

Performance

Application: Hazardous Location Heating
Operation: High Velocity Explosion Proof Air Heating
Control Strategy: Optional Built In Thermostat
Operating Temperature Range: -49°F to 104°F
Storage Temperature Range: -49°F to 176°F

Mechanical

Construction: 14 Gauge Epoxy Coated Steel Cabinet
Mounting: Two 14 Gauge Galvanized Steel Mounting Brackets
Heating Assembly: Two Incoloy 840 Sheathed Elements
Fin Design: Radial Embossed Aluminum Plate Fins
Enclosure Options: Defender Cast Aluminum or x-Max Extruded Aluminum Housing
Ingress Protection: IP55 Moisture Ingress Protection

Compliance

Certification: UL Certified for Hazardous Locations
Classifications Without Built In Thermostat: Class I, Divisions 1 and 2; Zones 1 and 2; Groups as specified by housing configuration
Classifications With Built In Thermostat: Class I, Divisions 1 and 2; Zones 1 and 2; Groups as specified by thermostat configuration
Optional Construction: 304 Stainless Steel Cabinet and Mounting Hardware

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