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Enclosed metal dual-output power supply unit

Mean Well

Mean Well AD-155B Dual Output Power Supply 151.55W

SKU CH-HQ2N-KJHM6

Dual-output AT power supply delivering 151.55 W with 27.6 V at 5 A and 27.1 V at 0.5 A for security and emergency lighting systems

  • Product typeAT
  • Dual-output design powers security and alarm systems
  • 55 W total output supports demanding loads
  • Channel 1 delivers 27.6 V at 5 A
  • Channel 2 provides 27.1 V at 0.5 A
  • Enclosed AT-type construction fits standard installations

Dual-output enclosed PSU

The Mean Well AD-155B is an AT-type switching power supply delivering 151.55 W across two independent channels. It suits installers and system builders who need regulated DC for security, alarm or emergency-lighting equipment.

Free accessory included

Each unit ships with a complimentary gift that adds no extra cost to the order. The bonus item does not alter the electrical specifications or the mounting footprint of the supply itself.

AT form-factor constraints

The AT enclosure limits integration to chassis or cabinets designed for that legacy form factor. Builders requiring modern ATX mounting points or modular cabling will need a different platform.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $116.99
Cheaper than about 60% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

When will the AD-155B need its electrolytic capacitors replaced in a security monitoring system?

Capacitor life depends on operating temperature and load; the unit delivers CH1 27.6V at 5A and CH2 27.1V at 0.5A continuously, so cooler installations extend replacement intervals.

Which output hits its current limit first during a prolonged alarm event?

CH2 is rated for 0.5A while CH1 handles 5A, so the auxiliary 27.1V rail reaches its limit well before the main 27.6V rail.

How much heat does the AD-155B dissipate when both outputs run at full load all day?

At 151.55W total output the supply loses some power as heat; the enclosed metal case acts as a heatsink, so surface temperature rises but stays within the design limits for continuous operation.

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