E-4
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.
When applying for UL approval for a product that includes one of these ST units, please be
sure to pay special attention to the fact that all products with built-in ST units require UL
inspection of the combination of the ST and the product. This Unit conforms as a compo-
nent to the following standards:
UL508 UL File No.220851
Safety of Industrial Electrical Equipment.
- The ST's front face is evaluated as an Enclosure, and all other areas are evaluated as an
Open Enclosure.
- Be sure to supply 24V power from a Class II circuit. The ST's front face satisfies
NEMA#250 TYPE 4X/12 requirements.
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.14 and No.213-M1987
Safety of Information Technology Equipment for use in Class I and II, Division 2, and Class
III Hazardous (classified) locations.
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)
<Cautions>
If the ST is mounted so as to cool itself naturally, please mount it on a vertical panel. Also,
insure that the ST 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's internal com-
ponents may cause it to fail to meet UL standards.
UL1604 Conditions of Acceptability and Handling Cautions:
1. Power and input/output wiring must be in accordance with Class I, Division 2 wiring
methods - Article 501-4(b) of the National Electrical Code, NFPA 70 within the United
States, and in accordance with Section 18-152 of the Canadian Electrical Code for
installallations within Canada and in accordance with the authority have jurisdiction.
2. Suitable for use in Class I, Division 2, Groups A, B, C, and D Hazardous Locations or
non-Hazardous Location only.
3. Confirm that the power supply has been turned OFF before disconnecting equipment, or
confirm that the location is not subject to the risk of explosion.
4.
WARNING:
Explosion hazard - substitution of components may impair suitability for
Class I, Division 2.
5.
WARNING:
Explosion hazard - when in hazardous locations, turn power OFF before
replacing or wiring modules.
6.
WARNING:
Explosion hazard - DO NOT connect/disconnect equipment unless area is
known to be nonhazardous or the power has been switched off. TOOL port is for system
set-up and diagnostics in a nonhazardous location area only.
*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”
