1.1 These requirements cover component electronic controls intended to be factory installed on or in
appliances and other utilization equipment rated 600 V or less, used in ordinary dry locations as defined
in the National Electrical Code, NFPA 70, and that comply with the requirements for such appliances and
equipment.
1.2 For a control covered by this standard, it is assumed that:
a) No voltage greater than 600 V above ground will be present in a control,
b) An isolation transformer, if provided, will generally furnish power at a lower potential than the primary voltage, and
c) The output of the control will not be located in a circuit operating at greater than 600 V
above ground in the end-use product.
If conditions other than these are provided, consideration shall be given to the need for additional requirements.
UL 244A-2003 history
2013UL 244A BULLETIN-2013 UL Standard for Safety Solid-State Controls for Appliances (COMMENTS DUE: May 27@ 2013)
1970UL 244A-2013 Solid-state controls for appliances
2012UL 244A CRD-2012 UL Standard for Safety Solid-State Controls for Appliances - Section / Paragraph Reference: 24.3 Subject: Abnormal Switching Test - Requirements for controls using electronic triggering techniques@ such as zero-crossing switching@ to switch the control’s
2008UL 244A BULLETIN-2008 UL Standard for Safety Solid-State Controls for Appliances
2003UL 244A-2003 UL Standard for Safety Solid-State Controls for Appliances
1994UL 244A-1994 Solid-state controls for appliances