Description
The Mersen AJT150 is a 150A Class J time-delay fuse with SmartSpot® visual indication, designed to protect industrial circuits from overcurrent events. Its compact blade-style body, high interrupting capacity, and dual-element construction make it ideal for motor and transformer protection.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Mersen / Ferraz Shawmut |
| Category |
|
| Part Number |
AJT150 |
| Subcatecory |
|
| Series |
Amp-Trap 2000® AJT Series
|
| Current Rating |
150 Amps
|
| Voltage Rating (AC) |
600 V AC
|
| Voltage Rating (DC) |
500 V DC
|
| Interrupt Rating (AC) |
200 kA @ 600 V AC
|
| Interrupt Rating (DC) |
100 kA @ 500 V DC
|
| Body Style |
Blade |
| Fuse Size |
5-3/4 in L x 1-5/8 in Dia
|
| Mounting |
Clip |
| Indication System |
SmartSpot®
|
| Body Material |
Melamine/Fiberglass
|
| Terminal Type |
Tin-Plated Copper, Ferrule
|
| Element Type |
Dual |
| Standards |
UL 248-8, CSA C22.2 No. 248.8, IEC 60269-2-1
|
| Compliance |
UL Listed, CSA Certified, RoHS Compliant
|
| Environmental Use |
NEC Class I Div. 2 (non-indicating version)
|
| Compatible Fuse Blocks |
JFB, SJ, US3J, US5J
|
| Equivalent Series |
Bussmann LPJ, Littelfuse JTD, Mersen AJT
|
| Country of Origin |
Mexico |
| Weight |
0.2 lb (90.7 g)
|
Information About AJT150
The AJT150 is part of the Mersen Amp-Trap 2000® AJT Series, offering time-delay circuit protection up to 600 V AC and 500 V DC. With a SmartSpot® indicator for quick identification of blown fuses, the AJT150 ensures maximum uptime and faster maintenance. Its dual-element design handles inrush currents while limiting let-through energy, making it suitable for motor loads, transformers, and other inductive circuits. Built with a melamine fiberglass-reinforced body and tin-plated copper terminals, it meets UL, CSA, and IEC standards and is compatible with non-rejection Class J fuse blocks such as JFB, SJ, US3J, and US5
Key Features:
- Time-Delay Performance: Designed to manage temporary inrush without nuisance tripping.
- SmartSpot® Indication: Visual fuse status indicator improves maintenance efficiency.
- Dual-Element Construction: Supports both short-circuit and overload protection.
- High Interrupt Ratings: Rated 200kA at 600V AC and 100kA at 500V DC for robust fault handling.
- Compact Blade Design: 5-3/4" length requires less panel space compared to Class RK fuses.
- Melamine Body Material: Offers high thermal and dimensional stability under harsh conditions.
- Hazardous Location Compatibility: Suitable for use in NEC Class I Div. 2 environments.
- Arc Flash Reduction: Recommended for systems requiring minimized arc energy exposure.
- Permanent Traceability: Metal-embossed date and catalog marking for lifecycle management.
- Easy Selectivity Coordination: Supports 2:1 ratio for preventing upstream fuse tripping.
The AJT150 offers rugged time-delay performance, fast fault clearing, and easy blown fuse identification for industrial circuit protection.
