All ICC Modular Connectors are classified as UL 94V-0 which the burning stops within 10 seconds on a vertical specimen, drips of particles are allowed as long as they are not inflamed. Most of ICC competitors Modular Connectors are classified as UL 94V-2 which is less flame-retardant, allowing the burning to stop within 30 seconds on a vertical specimen and drips od flaming particles are accepted. Some ICC Modular Plugs are classified as UL 94V-0 while some are UL 94V-2 (See Chart Below).
| UL 94V-0 | UL 94V-2 |
|---|---|
| ICMP8P8C5E | ICMP8P8CRD |
| ICMP8P8C6E | ICMP8P8SRD |
| ICMP8P8C6S | ICMP8P8CFT |