Customer Class File Number
Chromalox, Inc.
2150 North Rulon White Blvd
Ogden
Utah
United States
84404
2871-82
HEATERS - Miscellaneous - Certified to US Standards
207901


HEATERS MISCELLANOUS: The design and prototype verification for heating elements, heating equipment and process heating controls, Screw plug Immersion heater

Model(s)Frequency (Hz)PowerPower (kW)Voltage (V)Voltage (VAC)
Series VTS 100W to 600KW 120‑600
60 0.5 to 40120/208/240/480/575

Notes:

Additional suffix numbers and/or letters

HEATERS MISCELLANOUS: The design and prototype verification for heating elements, heating equipment and process heating controls, Circulation Oil heaters, NWHOSR, followed by suffix numbers and letters

Model(s)Frequency (Hz)PowerPower (kW)Voltage (V)Voltage (VAC)
NWHOSR 100W to 600KW 120‑600
60 0.5 to 10120/208/240/480/575

Notes:

Additional suffix numbers and/or letters may be added to the basic model designation to denote minor mechanical options.

HEATERS MISCELLANOUS: The design and prototype verification for heating elements, heating equipment and process heating controls, Circulation Water heaters, NWHSRG, followed by suffix numbers and letters

Model(s)Frequency (Hz)PowerPower (kW)Voltage (V)Voltage (VAC)
NWHSRG 100W to 600KW 120‑600
60 0.5 to 40120/208/240/480/575

Notes:

Additional suffix numbers and/or letters may be added to the basic model designation to denote minor mechanical options.

FLEXIBLE HEATERS: PART A ‑ Flexible heaters

Model(s)Max Temp (°C / °F)Voltage (VAC)
Series SR, Series EF200°C (392°F) max surface temperature120‑600

FLEXIBLE HEATERS: PART B ‑ Flexible heaters

Model(s)Max Temp (°C / °F)Voltage (VAC)
Series SL, Series SEF200°C (392°F) max surface temperature120‑600

FLEXIBLE HEATERS: PART C ‑ Flexible heaters

Model(s)Max Temp (°C / °F)Voltage (VAC)
Series SLD200°C (392°F) max surface temperature120‑240

GENERAL PURPOSE ELEMENTS: Cartridge type metal sheathed heating elements,, may or may not be followed by letters and/or numbers

Model(s)Max. Watts DensityVoltage (V max)
Type MW, Type MX, Type BL, Type BX300W/in2 max250

STRIP AND BAND HEATERS: Strip heaters

Model(s)Voltage (V)Watts Density
Type OT, Type S, Type SE, Type ST, Type PT, Type TH, Type STTH, Type SN, Type WS, Type SNH, Type NH300 or less 35 w/in2
480 or less13 w/in2
Type HD300 or less45 W per sq in or less

Note: Prefix "R" may be added to the subject models to denote rivets or threaded studs for mounting means

STRIP AND BAND HEATERS: Finstrip heaters

Model(s)Voltage (V)Watts Density
Type OTF, Type PTF, Type KSEF240 or less35 w/in2
480 or less13 w/in2
Type FHD300 and less45 W per sq in or less

Note: Prefix "R" may be added to the subject models to denote rivets or threaded studs for mounting means

STRIP AND BAND HEATERS: Seamless strip heaters

Model(s)Voltage (V)Watts Density
Type NS, Type NSL, Type NSA, Type SSNH, Type SSNHM, Type SSE, Type SSEB600 and less212 w/in2

Note: Prefix "R" may be added to the subject models to denote rivets or threaded studs for mounting means

STRIP AND BAND HEATERS: Ring Heaters single or three heat configurations.

Model(s)Voltage (V)Watts Density
Type A, Type HSW, Type RHSW, Type KB, Type HSP240 and less26 w/in2

Note: Prefix "R" may be added to the subject models to denote rivets or threaded studs for mounting means

CARTRIDGE ELEMENTS: Cartridge elements, followed by three digits

Model(s)Max. Watts Density (W/sq‑in)OD (in)Voltage (V)
Type CIR, Type CSIR, Type CRP, Type 042-3046073001/4 in to 3/8240 and less
1401/2 in and 3/4480 and less

                        Notes:

1.                  Type CIR, CSIR, CRP and 042-304607 are provided with pigtail lead wire extensions insulated with Certified/UL sleeving or with swaged Certified/US insulated wires.

2.                  Suffix numbers/letters are added to the type designations denoting diameter, length and wattage.

3.                  Suffix "S" is added to the type designations to denote swaged-on alloy sleeve.

4.                  Suffixes J1, J2, J3, K1, K2 or K3 may be added to denote the addition of Type J or K thermocouple and its location.

5.                  Suffixes 2C to 20C may be added to denote the addition of optional features.

6.                  Suffix numbers may be added to all cartridge heater series for customer identification not affecting CSA Certification.

7.                  All heaters are certified only for use in equipment where the Canadian Standards Association determines the suitability of the combination.

Screw plug immersion heaters

Model(s)Max. Watts Density (W/sq‑in)Power (W max)Voltage (V)
Type RI361000120 or 240
Type RIO22600120 or 240
Type RIS35750120 or 240
Type RIN401000120 or 240
Type RINO25600120 or 240

Note:  Suffix numbers are added to the type designations denoting diameter and wattage.

To the requirements of
UL 499:2014 - Fourteenth Edition - Including Revisions Through May 21, 2021

Screw plug immersion heaters ,600V and less (except where 0.246 in dia. heaters are used, the limit is 250V and less), 212W/sq in max.

Model(s)
EMT, MT, TM*, TMW, TMW-1, TMW-2, DWH MR, DWH, ARCEMT, ARCMT, AREMT, ARMT, ARTM, ARTMW, 121376, TM

Flange type immersion heaters, 600V and less (except where 0.246 inch dia. heaters are used, the limit is 250V and less), 212W/sq inch max.

Model(s)
TTSF, HI, WI, WS, TTUH, STFX

*May be either a screw plug or flange type heater.

Screwplug immersion heaters, with orwithout thermostat, with orwithout thermocouple rated 600Vac max, 90 w/sq inmax, single orthree phase

Model(s)
Ogden Series K, RTD

Ogden Series K, May include suffix E, F, G, H, I, J, L, M, N, B, V, W, Q, R, S, T, Y, Z, may be followed by X, followed by 1, 2, 3, 4, 5 or 6, may or may not be followed by T1, T2, T2R, T3, followed by four digits, followed by M1 or M5. With or without thermostat, with or without thermocouple or RTD.May include suffix A, S, C, T1, T2, T2R, T3, M1, X.

Notes:

  1. The screw plug immersion heaters, Series EMT and MT, followed by one or two digits to identify the unit series.  Series EMT, MT and TM, followed by a max of four digits to identify the rating, may be provided with the Suffixes CIR I, II, IS, M, O, OIS, OS, OSS, S, SS, T, W, WI, WS, WSS, E4, C30, C31, C32, C33, C36, C37, V, W or XX and may include Prefix AR or ARC. Series may include model suffix A, 3, or 3A. Series EMT and MT with Prefix AR may include Suffixes T1, T2, T3, T4, T5 or T8.  Series EMT and MT with Prefix ARC may include suffixes T1, T2, or T3. Series TM with Prefix AR may include Suffixes TL or TH.
  1. The screw plug immersion heaters, Series TMW-1 and TMW-2, followed by a max of four digits to identify rating, may be provided with the Suffixes I, S, SS, V, W or XX.
  1. The flanged type immersion heaters, Series TM may be provided with the Suffixes I, II, IS, M, O, S, SS, SSS, T, B or f followed by 2, 3, 4, 6, 9, 12, 15, 18, 24, 27A, 27, 36A, 36, 45, 54, 60, 72 or 90 to identify the element quantity followed by a max of three digits to identify the rating, may be provided with Suffixes 5, 15, 25, 3, 4, 6, 9, 15, 25, F1, H, L, M, P, R1, E4, T1, T2, T3, C30, C31, C32, C33, C36, C37, A, S, V, W or XX.
  1. The screw plug immersion heaters, Series DWH and DWH-MR followed by a max of 2 digits to identify the rating, may be provided with Suffixes I or S. Series DWH-MR may be provided with Suffixes PS.
  1. The above heaters are Certified only for use in equipment where the acceptability of the combination is determined by CSA or Local Inspection Authorities.
  1. Flanged immersion heaters STFX may be provided with suffixes S, I, X, P, E4, XX and may be used in combination with numbers

  2. The acceptability of any thermostat assembled to the heater is to be determined in the end use application.
  3. Suitability of any control components assembled into the control box / terminal box shall be investigated in the end use application

Strip and band heaters

Model(s)Max. Wattage (W)Voltage (V max)
series MT, may be followed by one to nine digits to indicate the length and serial number.3000240

Ceramic band heater

Model(s)Max. Wattage (W)Input Voltage (V max)
series C, may be followed by up to thirteen letters and numbers to indicate inside diameters and widths 8000480

Aluma‑flex band heater

Model(s)Max. Watts DensityVoltage (V max)
series AFH, followed by two to five digits indicating heater inside diameter and width except no width for standard 1-1/2 inch wide heaters; followed by three to four digits designating serial number; followed by letters designating option types.45W/in2 max480

Band heater, strap‑on type

Model(s)Input Voltage (VAC)Input Wattage (W)
series B, series FB120V or 240V75 to 5625W

Model series may be followed by one to twelve digits. The first one to three digits indicate inside diameter, the next two letters designate clamping arrangement, “S” = straps, “E” = ears and termination, “T” = stud terminals, “L” = Leads, “F” = flag terminal, the next two digits indicate length and the last five digits indicate the serial number 

Half band heaters

Model(s)Input Voltage (VAC)Input Wattage (W)
series HB, series PB120V1800W max
240V3600W max
series BH240V700W

Model series may be followed by one to twelve digits. The first one to three digits indicate inside diameter, the next two letters designate clamping arrangement, “S” = straps, “E” = ears and termination, “T” = stud terminals, “L” = Leads, “F” = flag terminal, the next two digits indicate length and the last five digits indicate the serial number 

Mica strip heater

Model(s)Input Voltage (VAC)Input Wattage (W)
series HS240V2850W max

Model designation may be followed by up to twelve digits. The first letter E or M indicates English or Metric, the next one to three digits indicate length, the next letter A to S indicates length fractions, the next whole number with zeros indicates width, the next letter A to S indicates width fractions, the last five digits is the serial number.

 

 

Note: All Model Series are designated as Part Number Series 142 (followed by 9 additional digits)

Flexible heaters, permanently connected or cord connected

Model(s)Max. Surface Temperature (°C)Input Voltage (VAC max)
Series SR, Series EF, Series SL, Series SEF, Series SLD200°C (392°F) 600

Note: Certified only as component parts for use in other equipment where the suitability of the combination is to be determined by CSA

To the requirements of
UL 499 (14th Ed., Dated May 21, 2021 )

Immersion Heaters:

Model(s)Max. Watts DensityVoltage (V)
Part No. Series: 157+ and 157-87200W/in2600 and less

GENERALPURPOSEELEMENTS:

Model(s)Max. Watts DensityVoltage (V)
Part No. Series: 087+, 118+, 319+, 322+, 393+65W/in2600 and less

- (+) Allfollowed by nineadditional digits.