UL Catalog 2024-2025 - Flipbook - Page 379
SECONDARY DISCONNECT
COMMUNICATION/
INTERCOM DISCONNECTS
Communication/Intercom Secondary Disconnects are designed
to expand the number and type of circuits that can be
disconnected. They are used for intercom wiring and can also
be used to disconnect additional communication conductors
connected to a dispenser.
HIGHLIGHTS
• Secondary intercom disconnect expands the capability
of the primary disconnect.
• Used for communication circuits with 4 or 8
conductors per dispenser.
• Aids in compliance of the NFPA® and NEC® codes.
• Suitable for new and retrofit applications.
• Connects to and controlled by any primary disconnect.
• Expandable for the future.
• Compact modular design.
• Pluggable terminal blocks for easy wiring.
• Disconnects 4 or 8 conductors per dispenser channel.
• Handles any intercom configuration that uses 1 call button &
1 speaker, 2 call buttons, or 2 speakers per dispenser OR an
intercom configuration that uses 2 call buttons & 2 speakers
per dispenser.
• Secondary disconnect models connect to the primary disconnect
allowing secondary circuit conductors to be disconnected when
the emergency stop system is activated.
• Individual disconnects for each circuit types allows the disconnect
to be located where the conductors enter the building. This can
eliminate costly additional wiring and downtime that maybe
required to re-route conductors to a central location such as the
electrical room, during a retrofit
or site upgrade.
• Include 6' and 25' DB-9 cables for connection to the primary.
SPECIFICATIONS
8 or 16
E-Stop Control Input
Connects to Remote Control
Output of Primary Disconnect
Number of Conductors
Disconnected per Dispenser
Approvals
4 Conductors + (Shield –
Not Disconnected)
8 Conductors + (Shield –
Not Disconnected)
Signal Circuit Rating
Class 2, 48V Max, 3 Amp
Surge Protection Available
No
Individual Channel Control Switches
Provided by the Primary
Disconnect
Secondary Remote
Expansion Output
Yes
Certifications
cUL Listed 1238
INTEGRATED ELECTRICAL
CONTROLS
Number of Dispenser Channels
- For compliance with NEC® 514.11
and NFPA® 30A Section 6.7
requirements for Emergency
Disconnects at Motor Fuel
Dispensing Facilities (controlled
by E-Stop system)
- For compliance with NEC® 514.13
requirements for Maintenance
Disconnects at Motor Fuel
Dispensing Facilities (switches to
disconnect individual dispenser
circuits for servicing)
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