Please Note: The integral thermostat functions as a temperature control only. This is not a fail safe device. An
approved pressure and/or temperature control should be used with these heaters to assure safe operation.
See the Temperature Section for our selection of control devices.
CAUTION AND WARNING!
Fire and electrical shock may result if products are used improperly or installed or used by non-qualified
personnel. See inside back cover for additional warning.
kW
W/in2
No. Htg. Elem.
Dim.B in(cm)
T3 Temp.Range (200-550°F) Model No.
T2 Temp. Range (60-250°F) Model No.
T1 Temp.Range (0-100°F) Model No.
Wt. Ib(kg)
ARMTO-3 with E1 General Purpose Enclosure 1
3
15
3
24 1/2 (62)
ARMTO-303/*
ARMTO-303T2/*
ARMTO-303T1/*
11 (5)
4
15
3
32 3/8 (82)
ARMTO-304/*
ARMTO-304T2/*
ARMTO-304T1/*
12 (5)
5
15
3
39 7/8 (101)
ARMTO-305/240
ARMTO-305T2/240
ARMTO-305T1/240
13 (6)
6
15
3
47 3/8 (121)
ARMTO-306/*
ARMTO-306T2/*
ARMTO-306T1/*
14 (6)
7.5
15
3
57(145)
ARMTO-307/240
ARMTO-307T2/240
ARMTO-307T1/240
15 (6)
9
15
3
67 3/8 (171)
ARMTO-309/240
ARMTO-309T2/240
ARMTO-309T1/240
16 (7)
ARMTO-3 Series with Moisture Resistant/Explosion Resistant Enclosure2†
3
15
3
24 1/2 (62)
ARMTO-303E2/*
ARMTO-303E2T2/*
ARMTO-303E2T1/*
16 (7)
4
15
3
32 3/8 (82)
ARMTO-304E2/*
ARMTO-3046E2T2/*
ARMTO-304E2T1/*
17 (8)
5
15
3
39 7/8 (101)
ARMTO-305E2/240
ARMTO-305E2T2/240
ARMTO-305E2T1/240
18 (8)
6
15
3
47 3/8 (121)
ARMTO-306E2/*
ARMTO-306E2T2/*
ARMTO-306E2T1/*
19 (9)
7.5
15
3
57(145)
ARMTO-307E2/240
ARMTO-307E2T2/240
ARMTO-307E2T1/240
20 (9)
9
15
3
67 3/8 (171)
ARMTO-309E2/240
ARMTO-309E2T2/240
ARMTO-309E2T1/240
21(10)
/* Designate voltage, ie., insert 208 for 208 Vac, 240 for 240 Vac, or 480 for 480 Vac. Model numbers containing 240 V are only available in that voltage.
†Caution: Explosion resistant type E2 construction refers to heater design features which provide explosion resisting containment of electrical
wiring according to National Electric Code. Abnormal application or use of heaters which in excessive temperatures can create hazardous
conditions which can lead to fire Consult Section Z for data on allowable watt densities for more viscous materials.
1 Heaters with General Purpose Enclosures are UL Listed with T1 or T2 Temps and CSA Certified with T1, T2 or T3 Temps.
2 Heaters with Moisture Resistant/Explosion Resistant Enclosures are CSA NRTL/C Certified with T1, T2 or T3 Temps.
† Price are shown in RMB.
Part Number Builder
Option Descriptions
(1)
Wattage
Select 03 for 3 kW 04 for 4 kW 05 for 5 kW 06 for 6 kW 07 for 7.5 kW 09 for 9 kW
(2)
Temperature Range and Enclosure Style
Select Nothing(leave field blank) for 200-550°F with a general purpose terminal enclosure T1 for 0-100°F with a general purpose terminal enclosure T2 for 60-250°F with a general purpose terminal enclosure E2 for 200-550°F with a moisture resistant/explosion resistant enclosure E2T1 for 0-100°F with a moisture resistant/explosion resistant enclosure E2T2 for 60-250°F with a moisture resistant/explosion resistant enclosure
(3)
Voltage
Select 208V for 208 Vac 240V for 240 Vac 480V for 480 Vac
NOTE: All combinations may not be valid, check spec sheet for valid part numbers.
Keywords:Medium Weight Oil Immersion Heater with Integral Thermostat—2 1/2" NPT Steel Fitting
