Thetford Spinflo Minigrill Lid Shut-Off Switch Assembly

This is the lid shut-off switch assembly fitted to Thetford Spinflo minigrill cooktops, a safety interlock that only allows gas to flow to the grill burner while the hinged lid is raised. It replaces the earlier SMAC3121 part and is commonly cross-referenced as SSPA0613. Over time the switch contacts and cherry-coloured actuator wear or stick, which shows up as a grill that won't ignite, cuts out mid-use, or refuses to stay lit even with good gas supply and a working igniter; fitting a new switch assembly resolves this. As it forms part of the gas safety circuit, installation should be carried out by a qualified gas fitter or appliance technician rather than as a DIY swap.

• Type: Grill lid shut-off (safety interlock) switch assembly
• Current/cross-reference part number: SSPA0613
• Superseded part number: SMAC3121
• Suits: Thetford Spinflo minigrill cookers (including K1540 series)
• Finish: Cherry-coloured actuator, 4-gang control panel fitment

• Q: What does this switch actually do?
  A: It's a safety interlock, it only allows gas to reach the grill burner when the lid is open, and cuts it off as soon as the lid is closed, preventing gas building up under a closed lid.
• Q: My grill won't light even though the burner and igniter seem fine, could this be the cause?
  A: Yes, a worn or stuck lid shut-off switch is a common cause of a grill that won't ignite or that cuts out shortly after lighting, even when the burner and igniter test fine on their own.
• Q: Can I fit this myself?
  A: Because it sits in the gas safety circuit, fitting is best left to a qualified gas fitter or caravan appliance technician rather than attempted as a DIY job.
• Q: Is SMAC3121 the same part as this one?
  A: SMAC3121 was the original part number; it has since been superseded and is now supplied and listed under the SSPA0613 code, but the two are the same switch assembly.