Product Description
24VDC motor reversing contactor, rated 100A, Albright DC88-500, used for electric lift trucks and compatible DC drive systems. Main terminals M8 stud, double-breaking silver alloy contacts, rated for up to 80VDC, high duty cycle, designed for frequent switching, includes failsafe to prevent simultaneous coil energizing. Replaces Curtis 1-105-218; equivalent to DC88-4.
Specifications
Electrical
| Coil Voltage | 24VDC nominal |
| Coil Power Dissipation | 7 to 13W (continuous) |
| Main Contact Voltage Rating | Up to 80VDC |
| Fault Current Breaking Capacity | 600A at 80VDC with blowouts; 800A at 48VDC without blowouts |
| Auxiliary Contact Rating | 5A at 24VDC |
| Typical Voltage Drop per Pole at 100A | 50mV |
Part Numbers
| Cross-Reference Part Numbers | Equivalent to Albright DC88-4, supersedes Curtis 1-105-218 |
| Manufacturer Part Number | DC88-500 |
| OEM Part Number | DC88-500 |
Performance
| Mechanical Life | 5,000,000 cycles |
| Contact Changeover Time | 7ms N/C to N/O; 4ms N/O to N/C |
| Contact Bounce Period | 3ms |
Frequently Asked Questions
Q: What is the DC88-500 rated for?
A: The Albright DC88-500 is a 24VDC motor reversing contactor with a 100A continuous duty rating, double-breaking silver alloy contacts, main terminals M8 stud, and a maximum contact voltage rating of 80VDC. It is designed for high-duty-cycle frequent switching in electric lift trucks.
Q: Does the DC88-500 replace the Curtis 1-105-218?
A: Yes. The DC88-500 is a direct replacement for the Curtis 1-105-218 contactor. It maintains the same electrical specifications and mounting interface required for Curtis-equipped electric lift trucks.
Q: Is the DC88-500 equivalent to the DC88-4?
A: Yes. The DC88-500 is equivalent to the Albright DC88-4 and can be used as a cross-reference substitute where the DC88-4 was originally specified.
Q: What is the coil power dissipation for the DC88-500?
A: The DC88-500 has a coil power dissipation of 7 to 13 watts during continuous duty operation at 24VDC nominal coil voltage.
Q: What safety features does the DC88-500 include?
A: The DC88-500 includes a failsafe mechanism designed to prevent simultaneous coil energizing, which protects the motor from shortcircuit and ensures safe reversing operation in electric lift trucks.
Q: What is the maximum fault breaking capacity of the DC88-500?
A: The DC88-500 is rated to break fault currents up to 80VDC maximum. Verify the actual fault breaking capacity specification based on your specific voltage and blowout configuration requirements.