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UL/c-UL Application Notes
The ST400-AG41-24V/ST401-AG41-24V/ST402-AG41-24V/ST403-AG41-24V units are UL/c-UL listed product.
ST400-AG41-24V (UL Registration Model: 3180053-02)
ST401-AG41-24V (UL Registration Model: 3180053-03)
ST402-AG41-24V (UL Registration Model: 3180053-04)
ST403-AG41-24V (UL Registration Model: 3383102-01)
The ST unit conform to the following standards.
• UL508 UL File No.220851 Safety of Industrial Equipment
• UL1604
*1
UL File No.182139 Safety of Information Technology Equipment for use in Class I and II, Division 2, and
Class III Hazardous (classified) locations.
• CAN-C22.2 No.213-M1987 Non-incendive Electrical Equipment for use in Class I, Division 2 Hazardous Locations
(Industrial Products)
• CAN-C22.2 No.14 Industrial Control Equipment
Installation Precautions
• The ST unit must be used indoors only.
• The ST unit should be installed in the front face of a metal panel.
• If the ST unit is mounted so as to cool itself naturally, please mount it on a vertical panel. Also, ensure that the ST unit
is mounted at least 100 mm away from any other adjacent structures or machine parts. If these conditions are not met,
the heat generated by the ST unit internal components may cause it to fail to meet UL standards.
• The ST’s FACE section is evaluated as an Enclosure, and all other areas are evaluated as an Open Enclosure.
• The ST’s FACE section satisfies NEMA#250 4X/12 requirements.
• The ST’s rear is not qualified as an Enclosure. Build the ST unit into an end-use product and make up an Enclosure
which conforms with standards as the entire equipment.
• Be sure to supply power(DC24V) from a Class II circuit.
UL1604 /CSA-C22.2 No.213 Compliance and Handling Cautions
1. Power and input/output (I/O) wiring must be in accordance with Class I, Division 2 wiring methods - Article 501-
4(b) of the National Electrical Code, NFPA 70 or as specified in Section 18-152 for installation within Canada.
2. This equipment is suitable for use in Class I, Division 2, Groups A, B, C, and D Hazardous Locations.
3. WARNING: Explosion hazard - substitution of components may impair suitability for Class I, Division 2.
*1 ST400-AG41-24V/ST401-AG41-24V/ST402-AG41-24V/ST403-AG41-24V units with revision code
“A” or later are all UL1604 compliant
Revision Information (Page10) SEE