SR3MBU01BD by Schneider Electric | Smart Relay Backup Cartridge

Product Description – Schneider SR3MBU01BD Zelio Logic Memory Cartridge

The Schneider SR3MBU01BD memory cartridge is designed to simplify program backup, transfer, and storage for Zelio Logic SR2 and SR3 smart relays. It enables users to save an entire automation program from a base unit and restore it at any time, thereby ensuring reliable continuity of operations. Moreover, this compact plug-in cartridge eliminates the need for a PC during program transfer, making it ideal for field technicians and maintenance teams. Its lightweight and space-saving design allows installation directly in the front panel slot of the base unit, providing fast and secure program management.

In addition, the SR3MBU01BD module ensures long-term reliability with non-volatile memory capable of storing up to 100,000 write cycles. Therefore, it supports repeated program transfers or backups without any risk of data loss. Built to withstand typical industrial environments, it operates across a wide temperature range and maintains data retention for over ten years even without power.

Technical Specifications

Electrical

• Supply Voltage: Powered directly by Zelio Logic base unit

• Memory Type: Non-volatile EEPROM

• Storage Capacity: One complete Zelio Logic program

• Data Retention: ≥10 years without power

• Write Cycles: ≥100,000 cycles

Mechanical

• Mounting: Front panel plug-in slot (SR2/SR3 series)

• Dimensions (W × H × D): 40 × 20 × 10 mm

• Weight: 200 g

• Connection Type: Direct plug-in, no wiring required

Environmental

• Operating Temperature: −20 °C to +55 °C

• Storage Temperature: −40 °C to +70 °C

• Relative Humidity: 5–95% non-condensing

• Protection Rating: IP20 when inserted

Compliance

• Standards: IEC/EN 61010, IEC/EN 60947‑5‑1

• Certifications: CE, UL, CSA

• Sustainability: RoHS and REACh compliant

FAQ

Q1: Can the SR3MBU01BD operate without a Zelio Logic base unit?
No, this memory cartridge must be inserted into an SR2 or SR3 base unit to function properly.

Q2: How long can the module retain stored programs without power?
Stored programs remain intact for at least 10 years even without external power.

Q3: How many times can the program be written or transferred?
It supports at least 100,000 write cycles, ensuring repeated backup and transfer capability.

Q4: Is any wiring required for installation?
No wiring is required; the module is a plug-in cartridge that connects directly to the front panel slot.

Q5: Can this module be used in harsh environments?
Yes, it operates from −20 °C to +55 °C and handles 5–95% relative humidity in protected enclosures.