ABB B273302 - Differential Lock Type B 4P 63A 30mA

ABB B273302 - Type B Differential Lockout 4P 63A 30mA - Advanced Protection for Circuit Breakers

DDA 200: Advanced differential protection for ABB circuit breakers

ABB B273302 - Type B Differential Block

The ABB Differential Block B273302 is an essential component of the DDA 200 series, designed to provide advanced thermal-magnetic differential protection. This device is compatible with the thermal-magnetic circuit breakers of the S 200 L, S 200, S 200 M and S 200 P series, guaranteeing a wide coverage in terms of safety and reliability.

compared to standard models, the Type B is designed to detect leakage currents in alternating current (AC), pulsating direct current (A) and pure direct current (B), making it ideal for the protection of inverters, photovoltaic systems, electric vehicle charging stations and systems with advanced electronic components.

In addition, it can be combined with the magnetic-only switches of the M 200 series, with the need to integrate separate thermal overcurrent protection.

Main features:

• Order Code: ABB B273302
• Type: Differential lock for circuit breakers
• Compatible with: S 200 L, S 200, S 200 M, S 200 P and M 200 series
• Number of poles: 4P
• Current rating: 63A
• Differential sensitivity: 30mA
• Type of protection: Type B (protection for AC, A and B currents)
• Voltage rating: 230/400V AC
• Mounting: DIN Rail
• Grade of protection: IP2X
• Dimensions (W x H x D): 140 x 93 x 76 mm
• data-start=1739 data-end=1777>Nominal frequency: 50 ... 60 Hz

Main advantages:

✅ Comprehensive protection for advanced electronic devices, including inverters and EV charging stations
✅ Compatibility with thermal-magnetic and magnetic circuit breakers
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