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LAD-120C
Manufacturer MEAN WELL

LAD-120C

Availability: Out of stock
120 W41.5 / 41.5 V2.9 / 1 A90V-264V in

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LAD-120C
Quantity Prices (MXN)
Quantity
Unit Price (MXN)
1+
$ 724.16 MXN
10+
$ 687.95 MXN
20+
$ 673.47 MXN
50+
$ 658.99 MXN
100+
$ 644.50 MXN
200+
$ 630.02 MXN
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Quick Specs
Input Voltage
90V-264V
Output Voltage
41.5 / 41.5V
Rated Current
2.9 / 1A
Power Rating
120W
Waterproof
Non-waterproof
Dimensions & Weight
6.26 x 3.82 x 1.18 in

Datasheet (PDF)

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The MEAN WELL LAD-120C is a 120W security/fire alarm power supply with a built-in battery charger and UPS function. CH1 supplies the load at 41.5V (up to 1.9A) while CH2 charges an external 36V battery at 41.5V / 1A. When AC mains fails, the unit switches to UPS mode and the battery takes over the load; a battery cutoff at 32V Ā±0.5V protects the battery from deep discharge.

Key features

  • CH1 load output 41.5V, 1.9A rated (0ā€“2.9A); CH2 battery charger 41.5V, 1A
  • Built-in UPS function: automatic switch to battery on AC failure
  • Battery cutoff 32V Ā±0.5V; battery reverse polarity protection (an external fuse in series with the battery is required)
  • Signal outputs: AC OK, battery low, battery full, battery disconnect/reverse polarity, discharge (TTL)
  • Input: 90ā€“264VAC / 127ā€“370VDC
  • Protections: overload, over voltage, over temperature
  • Typical efficiency 88%

Specifications

Output Voltage Rated current Current range Ripple & noise (max.)
CH1 (load) 41.5V 1.9A 0ā€“2.9A 240mVp-p
CH2 (battery charger) 41.5V 1A ā€” ā€”
Model LAD-120C
Series LAD-120
Total rated power 120.35W
CH1 voltage adjustment 32.4ā€“43.5V
Battery cutoff 32V Ā±0.5V
Input 90ā€“264VAC / 127ā€“370VDC
Efficiency (typ.) 88%
Working temperature -20 to +60Ā°C (-4 to 140Ā°F) ambient, derating per datasheet curve
Dimensions 159 Ɨ 97 Ɨ 30 mm (6.26 Ɨ 3.82 Ɨ 1.18 in) (L Ɨ W Ɨ H)
Weight 0.42 kg

Typical applications: security and access-control systems, fire alarm panels, emergency and backup-powered equipment.

Datasheet: LAD-120 series specification (PDF).

Similar Models

Same product family and output voltage, with the closest available power ratings.

Environmental Documents
šŸ“„ E6) COC-REACH (2026/01/28) šŸ“„ E9) CMRT (2025/04/25) šŸ“„ E14) COC-ROHS 2 (2015/863/EU) (2024/10/04) šŸ“„ REACH Certificate (PDF) (2020/12/03) šŸ“„ ROHS Certificate (PDF) (2020/05/29) šŸ“„ E12) COC-ROHS 2 (2011/65/EU) (2016/10/01)
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