- SCCR ratings have long existed in United States for certain components such as fuse holders.
The SCCR requirement was expanded with the release on the 2005 NEC, where marking of SCCR became required to:
HVAC equipment
Industrial Control panel
Industrial Machinery
Meter Disconnect Switches
Motor Controllers
Subsequently in 2006 this requirement has become a part of:
UL508A for Industrial Control Panels.
UL1059 for Terminal Blocks, supplement SA1, 2, 3, and 4, as optional
- WECO Terminal Blocks type 302 (HDS), 323(HDS), 324(HDS), 326(HDS), 327(HDS), 327-FU(HDS) are approved according to requirement of standard UL1059.
WECO Terminal Blocks type 302 (HDS), 323(HDS), 324(HDS), 326(HDS), 327(HDS), 327-FU (HDS) are not evaluated for Short Circuit Current Rating yet.
WECO Terminal Blocks type 302 (HDS), 323(HDS), 324(HDS), 326(HDS), 327(HDS), 327-FU (HDS) don’t have SCCR.
Customer may use WECO products and evaluate the final assembly (control panel, machinery, equipment) for SCCR.
- Terminal Blocks type 302 (HDS), 323(HDS), 324(HDS), 326(HDS), 327(HDS), 327-FU(HDS)
are approved by regulatory agencies in North America and Europe
3.1. UL safety standards UL1059 and UL486E
3.2. CSA safety standard C22.2 No.158
3.3. European safety standards
DIN EN 60998-1(VDE 0613-1), DIN EN 60998-2-1(VDE 0613-2-1) EN 60998-2-1
