Product Description
Albright SW180 series DC contactor, 36–48VDC, 150A continuous (200A resistive), for electric lift trucks, power distribution, and vehicle motors. Features M8 stud main terminals, >5 million mechanical cycles, and robust silver alloy contacts. Compatible with cross-reference numbers ALSW18048 and SW18048.
Specifications
Electrical Specifications
| Rated Contact Voltage | 36–48VDC |
| Rated Load Current | 150A continuous; 200A resistive only |
| Intermittent Current Rating | 275A at 30% duty, 235A at 40% duty, 210A at 50% duty, 195A at 60% duty, 180A at 70% duty (all values at 48V) |
| Rated Fault Current Breaking Capacity | 300A at 60V DC (resistive, no blowouts); 300A at 96V DC (resistive, blowouts); 1000A at 48V DC (no blowouts); 1000A at 96V DC (blowouts) |
| Typical Voltage Drop | 40 mV per pole across new contacts at 150A |
| Main Terminal Type | M8 stud |
| Contact Material | Robust silver alloy |
| Mechanical Cycles | Greater than 5 million |
Applications
| Typical Applications | Electric vehicle motors and power distribution systems, including industrial lift trucks |
Part Numbers
| Cross-Reference Part Numbers | ALSW18048, SW18048 |
| Manufacturer Part Number | SW180 |
Frequently Asked Questions
Q: What voltage range does the AL SW180-48 support?
A: The AL SW180-48 operates across 36VDC to 48VDC. This dual-voltage range makes it compatible with both 36V lift trucks and 48V systems without requiring separate part numbers. Verify your vehicle nameplate voltage before ordering.
Q: What is the continuous current rating for the AL SW180-48?
A: The AL SW180-48 is rated for 150A continuous duty and 200A resistive load only. Intermittent ratings range from 275A at 30% duty to 180A at 70% duty. Do not exceed continuous rating in steady-state applications such as pump motors or compressor duty.
Q: How many mechanical duty cycles can the AL SW180-48 withstand?
A: The contactor is rated for greater than 5 million mechanical switching cycles, making it suitable for frequent on-off cycling in lift trucks, power distribution systems, and vehicle motor control circuits.
Q: What are the cross-reference part numbers for the AL SW180-48?
A: Cross-reference numbers for this contactor are ALSW18048 and SW18048. These alternative part numbers may appear in OEM documentation for Crown, Toyota, Raymond, and Hyster electric lift trucks. All three numbers reference the same component.
Q: What terminal style does the AL SW180-48 use?
A: The AL SW180-48 features M8 stud main terminals, which are the industry standard for DC contactors in material-handling equipment. Confirm stud diameter matches your wiring harness connections before installation.
Q: What contact material provides the conductivity in the AL SW180-48?
A: The contactor uses robust silver alloy contacts designed to handle high-current switching with minimal contact voltage drop. This material choice ensures reliable long-term performance in demanding DC applications.