Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well LRS-450-12 Power Supply 450W 12V 37.5A

Q: What is the input voltage range of the LRS-450-12, and is it compatible with 240V mains?

The LRS-450-12 accepts 90–132VAC input only, making it suited for 120V North American mains but not directly compatible with 230V/240V European or international supply without a step-down transformer. Buyers outside 120V regions should confirm their local mains voltage before selecting this model.

Q: What applications suit the LRS-450-12 at 12V and 37.5A?

At 12V and 37.5A (450W), the LRS-450-12 is well-suited for powering 12V DC motor banks, industrial LED lighting arrays, high-current embedded computing platforms, and automation controllers in 120V environments. The 450W capacity supports multiple parallel 12V loads simultaneously.

Q: How does the LRS-450-12 compare to the LRS-350-12 and LRS-600-12?

The LRS-350-12 (348W, 29A, 90–264VAC input) fits in a 215 × 115 × 30 mm case; the LRS-450-12 (450W, 37.5A, 90–132VAC) uses a slightly larger 225 × 124 × 35 mm case; the LRS-600-12 (600W, 50A, 90–132VAC) steps up to a 225 × 124 × 41 mm enclosure. The LRS-350-12 offers universal AC input, while the LRS-450-12 and LRS-600-12 are limited to 90–132VAC.

Q: Can the LRS-450-12 operate in high-temperature industrial environments?

The LRS-450-12 operates from -20°C to +70°C and withstands 5G vibration. This range accommodates most industrial indoor panel environments. As an open-frame unit, it requires a suitable protective enclosure for any installation with moisture, dust, or airborne contaminants.

Q: What certifications does the LRS-450-12 carry?

The LRS-450-12 is certified CB, CE, CQC, EAC, TÜV, and UL. These cover European market (CE), international safety testing (CB, TÜV), North American listing (UL), Chinese market (CQC), and Eurasian conformity (EAC).

4.7 (17 reviews)

most economical modelultra compact and 1U low profilewithstand 5G vibration and 70°C operation

SKU LRS-450-12

Log in to see price Trade pricing & online ordering for account holders

Select model — 9 in this family

LRS-450-12

LRS-35-12 35W 12V In stock

LRS-100-12 100W 12V Low stock

LRS-150-12 150W 12V In stock

LRS-200-12 200W 12V Low stock

LRS-350-12 350W 12V In stock

LRS-450-12 450W 12V Low stock

LRS-50-12 50W 12V In stock

LRS-600-12 600W 12V Low stock

LRS-75-12 75W 12V Low stock

Product variants

Notify me when it's back in stock

Brand MEANWELL

AC input voltage range: 90 ~ 132VAC

Rated power: 450W

AC input range selectable by switch

Withstand 300VAC surge input for 5 second

Protections: Short circuit / Overload / Over voltage / Over temperature

Forced air cooling by built-in DC fan

Built-in cooling Fan ON-OFF control

1U low profile

Withstand 5G vibration test

LED indicator for power on

No load power consumption < 0.75W

100% full load burn-in test

High operating temperature up to 70℃

Operating altitude up to 5000 meters (Note.8)

High efficiency, long life and high reliability

3 years warranty

Key Features

✓180 / 264VAC by switch
✓Cold start, 60A at 230VAC
✓±10% by potentiometer
✓105%~150%
✓Constant current limiting, unit will shutdown after 3 sec, re-power on to recover
✓5.75 ~ 6.75V, 13.8 ~ 16.2V, 18 ~ 21V, 27.6 ~ 32.4V, 41.4 ~ 48.6V, 55.2 ~ 64.8V
✓Shut down o/p voltage, re-power on to recover
✓I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
✓-20 ~ +70℃ (Refer to "Derating Curve")
✓BS IEC/UL 62368-1, EAC TP TC 004,AS/NZS62368.1 approved
✓225*124*35mm (L*W*H)

Frequently Asked Questions

What is the input voltage range of the LRS-450-12, and is it compatible with 240V mains?

The LRS-450-12 accepts 90–132VAC input only, making it suited for 120V North American mains but not directly compatible with 230V/240V European or international supply without a step-down transformer. Buyers outside 120V regions should confirm their local mains voltage before selecting this model.

What applications suit the LRS-450-12 at 12V and 37.5A?

At 12V and 37.5A (450W), the LRS-450-12 is well-suited for powering 12V DC motor banks, industrial LED lighting arrays, high-current embedded computing platforms, and automation controllers in 120V environments. The 450W capacity supports multiple parallel 12V loads simultaneously.

How does the LRS-450-12 compare to the LRS-350-12 and LRS-600-12?

The LRS-350-12 (348W, 29A, 90–264VAC input) fits in a 215 × 115 × 30 mm case; the LRS-450-12 (450W, 37.5A, 90–132VAC) uses a slightly larger 225 × 124 × 35 mm case; the LRS-600-12 (600W, 50A, 90–132VAC) steps up to a 225 × 124 × 41 mm enclosure. The LRS-350-12 offers universal AC input, while the LRS-450-12 and LRS-600-12 are limited to 90–132VAC.

Can the LRS-450-12 operate in high-temperature industrial environments?

The LRS-450-12 operates from -20°C to +70°C and withstands 5G vibration. This range accommodates most industrial indoor panel environments. As an open-frame unit, it requires a suitable protective enclosure for any installation with moisture, dust, or airborne contaminants.

What certifications does the LRS-450-12 carry?

The LRS-450-12 is certified CB, CE, CQC, EAC, TÜV, and UL. These cover European market (CE), international safety testing (CB, TÜV), North American listing (UL), Chinese market (CQC), and Eurasian conformity (EAC).

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Model	Power	Voltage	Current
Mean Well LRS-450-24 Power Supply 450W 24V 18.8A	451.2W	24V	18.8A	View

Customer reviews

4.7 Reviews verified for authenticity

5 ★ (13)

4 ★ (3)

3 ★ (1)

2 ★ (0)

1 ★ (0)

Reviewed by 17 customers across the LRS series

Cheap and reliable enclosed PSU
By Ravi N.|2026-06-14✓ Verified Buyer
Model: LRS-50-24Quantity: 10
LRS-50-24 powers our sensor rack. Great price, no fuss.
Good budget option
By Kelly B.|2026-05-20✓ Verified Buyer
Model: LRS-100-24Quantity: 4
Runs a bit warm in a sealed box — add airflow. Otherwise solid.
Standardised on these
By FitOut Ltd|2026-04-25
Model: LRS-350-24Quantity: 25
Use LRS across all our retail fit-outs now.

Please log in to write a review.

{ "id":8343901733163, "variants" :[{ "context":"default", "variant_id": 45321085714731, "sku":"LRS-450-12", "inventory_qty" : 17, "customer" :false, "custom_html" :"\u003ca class=\"text-current logged-out-price logged-out\" href=\"https:\/\/wellforces.co.nz\/customer_authentication\/redirect?locale=en\u0026region_country=NZ\"\u003e\n \u003cspan \u003ePlease \u003c\/span\u003e \u003cspan class=\"login-text\"\u003eLogin\u003c\/span\u003e \u003cspan\u003e for Pricing\u003c\/span\u003e\n \u003c\/a\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }

Key Features

✓180 / 264VAC by switch

✓Cold start, 60A at 230VAC

✓±10% by potentiometer

✓105%~150%

✓Constant current limiting, unit will shutdown after 3 sec, re-power on to recover

✓5.75 ~ 6.75V, 13.8 ~ 16.2V, 18 ~ 21V, 27.6 ~ 32.4V, 41.4 ~ 48.6V, 55.2 ~ 64.8V

✓Shut down o/p voltage, re-power on to recover

✓I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC

✓-20 ~ +70℃ (Refer to "Derating Curve")

✓BS IEC/UL 62368-1, EAC TP TC 004,AS/NZS62368.1 approved

✓225*124*35mm (L*W*H)

Mean Well LRS-450-12 Power Supply 450W 12V 37.5A

Select model — 9 in this family

Key Features

Frequently Asked Questions

Payment & Security

Other LRS-450 Models

Customer reviews

Cheap and reliable enclosed PSU

Good budget option

Standardised on these

Write a review

Your cart

Mean Well LRS-450-12 Power Supply 450W 12V 37.5A

Key Features

Company Information

Services and Support

Choose options