Product Description
The SW80-740L is a 24VDC contactor for electric lift truck applications, rated for 100A continuous, 125A uninterrupted thermal current, and features a single-pole, single-throw, normally open configuration. Includes cross-reference to multiple OEM and industry part numbers.
Specifications
Product Overview
| Cross Reference Part Numbers | Supersedes SW80-1005L, replaces SW80-113L, interchangeable with 154548, 800076344, 802820, CT544-24 |
Physical Specifications
| Coil Voltage | 24VDC nominal |
| Continuous Current Rating | 100A |
| Uninterrupted Thermal Current | 125A |
| Intermittent Current Rating (30% Duty Cycle) | 185A interrupted; 230A uninterrupted |
| Intermittent Current Rating (40% Duty Cycle) | 160A interrupted; 200A uninterrupted |
| Intermittent Current Rating (50% Duty Cycle) | 140A interrupted; 175A uninterrupted |
| Intermittent Current Rating (60% Duty Cycle) | 130A interrupted; 160A uninterrupted |
| Intermittent Current Rating (70% Duty Cycle) | 120A interrupted; 150A uninterrupted |
| Pull-In Voltage | 16.0VDC maximum |
| Drop-Out Voltage | 6.0VDC maximum |
| Typical Pull-In Time | 20 milliseconds |
| Coil Power Dissipation | 11.08W |
| Main Terminal Type | M8 stud |
| Voltage Drop at 100A | 40mV per pole |
| Mechanical Life | Over 5,000,000 cycles |
| Fault Current Breaking Capacity (Icn) with Blowouts (UL583) | 600A at 96VDC |
| Fault Current Breaking Capacity (Icn) without Blowouts (UL583) | 600A at 48VDC |
| Configuration | Single-pole, single-throw, normally open |
Frequently Asked Questions
Q: What are the electrical ratings of the SW80-740L?
A: The SW80-740L is rated for 24VDC coil voltage with 100A continuous current and 125A uninterrupted thermal current. At 30% duty cycle, it handles 185A interrupted and 230A uninterrupted, providing flexibility for peak-load applications in electric lift trucks.
Q: What part numbers does the SW80-740L replace or cross-reference?
A: The SW80-740L supersedes SW80-1005L and replaces SW80-113L. It is interchangeable with part numbers 154548, 800076344, 802820, and CT544-24. Always verify your original part number before ordering to confirm direct substitution.
Q: What is the contactor configuration of the SW80-740L?
A: The SW80-740L is a single-pole, single-throw, normally-open contactor, the standard main-power switching device for 24V electric lift truck motor control circuits.
Q: Which lift truck brands does the SW80-740L fit?
A: The SW80-740L is compatible with 24V electric lift trucks from Crown, Toyota, Raymond, Yale, Hyster, Jungheinrich, Linde, Clark, Mitsubishi, Caterpillar, and BT. Confirm your truck uses 24VDC coil voltage and M8 or industry-standard compatible terminals.
Q: What is the mechanical life expectancy of the SW80-740L?
A: The SW80-740L is engineered for over 5,000,000 mechanical cycles. Actual lifespan depends on operating hours, duty cycle intensity, contact wear patterns, and maintenance practices. Inspect contact condition regularly and replace when voltage drop exceeds specification or functional issues arise.
Q: What symptoms indicate the SW80-740L needs replacement?
A: Replace the SW80-740L if the truck exhibits sluggish motor engagement, audible buzzing or chatter, intermittent loss of drive power, reduced hoist speed, or visible contact damage. Voltage drop testing and continuity checks confirm contactor failure.