M.1300.4981 Danaher
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The Danaher M.1300.4981 is part of the Block IO Analog Modules series and features 8 output channels with contact types of 4 Form C and 4 Form A. It supports a coil isolation voltage of 4000 Vrms and can handle a maximum AC switching current of 4 A at 120 VAC. The module offers a maximum DC switching power of 200 W at 4 A and operates with a turn-on time of 6 ms and a typical turn-off time of 2.5 ms.
Internal Product Review
The M.1300.4981 is a Danaher Block IO analog module with 8 output channels and 4000 Vrms coil isolation. Technical performance is strong, with 4 A switching at 120 VAC and 200 W DC switching capacity at 4 A for dependable signal handling. Fast 6 ms turn-on and 2.5 ms turn-off support clean, efficient output control.
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Product Description:
The M.1300.4981 belongs to the Block IO Analog Modules series manufactured by Danaher. It is an eight-point relay output block that allows a PLC or distributed controller to switch discrete AC or DC loads while keeping the field side galvanically separated from the logic side. Within an automation cell, the module acts as an electrically isolated interface that protects low-level control electronics from higher mains or actuator voltages present at its relay contacts.
A coil-to-contact isolation rating of 4000 Vrms separates the drive circuitry from external wiring, reducing the risk of cross-coupled faults. Each relay can carry up to 4 A at 120 VAC, so motor starters, solenoid valves, or indicator lamps can be energized directly without interposing contactors. The block provides 8 output channels arranged as 4 Form C and 4 Form A contacts; this combination offers both changeover and normally open options for flexible wiring. The typical turn-on delay is 6 ms, which is fast enough for most sequential logic steps, while the average turn-off delay of 2.5 ms allows circuits to clear quickly. Additional parameters include a breakdown voltage of 1000 Vrms across open contacts, an initial contact resistance of 100 mΩ, and an inrush capacity of 2.5 A for 250 µs to accommodate transient load surges.
The module can switch DC loads up to 200 W at 4 A, covering resistive heaters or clutch coils that draw constant current. The maximum operating rate is 20 cycles per minute, a value that must be considered when programming rapid, repetitive actuation. Control electronics draw only 120 mA from the backplane, minimizing the effect on the available power in densely populated racks. The minimum supported load is 100 mA, allowing the contacts to switch compatible low-current devices reliably. The maximum switching voltage is 150 VAC or 150 VDC, which establishes the upper voltage limit for connected field wiring.
