Power adapter MEAN WELL GSM40B48-P1J 40W 48V 80-264V

The MEAN WELL GSM40B48-P1J is a compact AC-DC medical desktop adapter that delivers 48 V DC at 1.84 A (40 W) from a universal 80–264 V AC input. It features a 2‑pin IEC320‑C8 input socket and a P1J tuning fork output plug (outer diameter 5.5 mm, inner diameter 2.1 mm, length 11 mm). The adapter meets EN 60601 requirements with 2xMOPP isolation and is a Class II device suitable for medical equipment and other applications that require a reliable low-voltage supply.

Advantages

Provides a stable 48 V / 1.84 A output with 40 W rated power in a compact housing (approximately 50 mm × 125 mm) and low weight (about 300 g). Universal input (80–264 V AC) allows worldwide use without an external converter. Compliance with EN 60601 2xMOPP and Class II insulation increases safety for medical applications. RoHS compliance ensures reduced hazardous substances.

Suitable for

• Powering medical desktop devices that require 48 V DC with medical-grade isolation
• Laboratory equipment and test benches needing a compact 40 W adapter
• Industrial or commercial electronics where a P1J (5.5 × 2.1 mm) tuning fork plug is required

Key specifications

• Manufacturer: MEAN WELL, model GSM40B48-P1J (MPN)
• Output: 48 V DC, 1.84 A, 40 W
• Input: 80–264 V AC, IEC320‑C8 2‑pin socket
• Output connector: P1J tuning fork plug, OD 5.5 mm, ID 2.1 mm, length 11 mm
• Safety: EN 60601 with 2×MOPP, Class II
• Compliance: RoHS
• Dimensions (approx.): 50 mm (W) × 125 mm (D)
• Weight (approx.): 300 g

How to use

Connect the adapter to a compatible AC mains supply using the IEC320‑C8 inlet and ensure the mains voltage is within 80–264 V. Plug the P1J tuning fork connector into the device input that accepts a 5.5 × 2.1 mm barrel. Verify polarity and connector fit before powering on. Place the adapter on a stable, ventilated surface and avoid covering it during operation to ensure adequate cooling.

Recommendations

Use this adapter with equipment rated for 48 V DC and within the 1.84 A current limit. For medical applications, maintain required creepage and clearance in system design and follow applicable EN 60601 installation rules. Do not open the adapter housing; refer servicing to qualified personnel.