The surface of the heating cable must not exceed the maximum temperature of the constructional materials or the Temperature Classification if installed in a hazardous area. This is ensured by limiting the pipe or workpiece temperature to a safe level either by design calculation or by means of temperatue control devices.
FailSafe Ultimo (FSU)




FailSafe Ultimo is an industrial grade self-regulating heating cable that can be used for freeze protection or temperature maintenance of pipework and vessels. It can be cut-to-length at site to match exact piping lengths without any complicated design considerations. FailSafe Ultimo has a continuous metal outer jacket which is ductile, yet withstands high mechanical loads, thus averting damage when installed in arduous environments. Its self-regulating characteristics improve safety and reliability. FailSafe Ultimo will not overheat or burnout, even when overlapped upon itself. Its power output self-regulates in response to the pipe temperature. FailSafe Ultimo is available with a fluoropolymer outer jacket when greater corrosion resistance is required. The installation of FailSafe Ultimo is quick and simple and requires no special skills or tools. Termination, splicing and power connection components are all provided in convenient kits. See Product, Application and Documentation Links below. | |  Fluoropolymer Outer Jacket |
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Product Specification | Maximum Withstand Temperature 250°C (482°F) |
FailSafe Ultimo is available in 15, 30, 45, 60, 75 and 100 W/m outputs as illustrated on the graph to the right. The graph shows the nominal power output at 230V when installed on insulated metal pipes. Click on the graph to see a larger version. | Maximum Withstand Temperature | 250°C (482°F) | | Maximum Energised Temperature | 250°C (482°F) | | Minimum Operating Temperature | -65ºC (-85ºF) | | Temperature Classification: 15FSU, 30FSU, 45FSU & 60FSU 75FSU | T3 (200°C/392°F)
T2 (300°C/572°F)
| | Power Supply | 1 - 277V AC | | Cable Dimensions | FSU-NF 12.1 x 5.4mm +/- 0.5 FSUw-NF 14.4 x 5.6mm +/- 0.5 | | |  Nominal power output against pipe temperature |

Product, Application & Documentation Links | |
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Standard Terminations | DESTU Terminations | Stripfree Terminations | Associated Products | Associated Applications | | | | |
Approvals and Certification
Trace Heating Cable Systems 08ATEX3096X
FSM, FSLE, FSR, FSS, FSP, FSPW, FSU, FSUW, DESTU, DESTU-P, DESTU-S, DESTU-E, DESTU-T, DESTU-CT 1547590 Haz Area
FSM, FSLE, FSR, FSS, FSP, FSPW, FSU, FSUw, DESTU, DESTU-P, DESTU-S, DESTU-E, DESTU-T, DESTU-CT, SF-P, SF-T, SF-S and SF–E 1295278 Safe Area
EC DoC FSU-C, FSU-CT, FSU-CF
EC DoC FSUw-C/N, FSUw-CF/NF
Self Reg Cable AA87.B.00610
Product and Application Datasheets
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