Altronix Corp MAXIMAL77D Access Power Supply 24VDC 20A

Product Description

The ALTRONIX CORP MAXIMAL77D is a 24VDC access control power supply delivering up to 20 amps of total output across 16 individually protected PTC (positive temperature coefficient) output circuits. Each PTC output provides self-resetting overcurrent protection, eliminating the need to manually replace fuses after a fault clears. The unit is designed for centralized power distribution in access control and security system installations. Licensed low-voltage and security systems technicians are the primary installers of this class of power supply.

The MAXIMAL77D is suited for commercial and enterprise access control deployments where multiple door controllers, electric locks, readers, or other 24VDC field devices must be powered from a single, managed source. Its 16-output architecture allows technicians to run discrete, protected circuits to individual devices or zones, simplifying troubleshooting and fault isolation across large installations.

Key Features

• 24VDC output at up to 20 amps total capacity
• 16 individually protected PTC output circuits with automatic self-resetting overcurrent protection
• High output current supports dense multi-device access control deployments
• PTC protection eliminates manual fuse replacement after fault events
• Single-unit centralized power distribution reduces field wiring complexity

Compatibility

Designed as an OEM-style power distribution solution for 24VDC access control systems, electric locking hardware, card readers, and similar low-voltage security field devices requiring individually protected power circuits.

Installation Notes

Installation should be performed by a licensed low-voltage or security systems technician in accordance with applicable NEC requirements for power-limited and access control circuits. Disconnect all input power before making any wiring connections to the unit. Verify that the combined current draw of all connected devices does not exceed the 20-amp total output rating. Mount the enclosure in a secure, accessible location appropriate for the authority having jurisdiction.