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

Mean Well ERDN20-12 Redundancy Module Power Supply 20A

redundancy modulesupport 1+1 and 1+N redundancyrelay contacts for monitoring power status

SKU ERDN20-12

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

Notify me when it's back in stock

The ERDN20 is a Mean Well power converter (operating temperature: -40~+85℃).

Key Features

✓ Wide operating temperature: -40~+85℃
✓ Protections: Short circuit / Overload
✓ DC OK relay contact output
✓ Safety approvals: WITHSTAND VOLTAGE ISOLATION RESISTANCE IEC62368-1, UL62368-1, EAC TP TC 004
✓ 3 years warranty

Frequently Asked Questions

What does the Mean Well ERDN20-12 do?

The ERDN20-12 is a redundancy module designed for DC power systems rather than a standalone AC-DC power supply. It supports 1+1 and N+1 redundant setups by taking two DC inputs and providing one DC output, helping maintain output if one supply path fails.

Is the ERDN20-12 specifically for 12V systems only?

No. Although this model is identified as ERDN20-12, the published specifications state it is suitable for redundancy operation in 5V, 12V, 24V, and 48V systems. Its DC input voltage range is 5-48V, with voltage ranges listed separately for each system class.

What current capacity does the ERDN20-12 support?

This redundancy module is rated for output current up to 20A. It also allows peak current of 0-30A per input for 5 seconds, and the overload and short circuit protection notes specify no damage below 30A for 5 seconds.

When is the ERDN20-12 a better choice than using a single DC power supply?

The ERDN20-12 is intended for systems that need higher power-path reliability than a single supply can provide. It is a practical choice for industrial control and other DC applications where a redundant 1+1 or N+1 architecture is preferred to reduce downtime risk.

Can the ERDN20-12 be used in demanding industrial environments?

It is specified for operation from -40 to +80 degrees C and uses free air convection cooling, which suits a wide range of industrial environments. The module also lists EMC compliance to EN55032 Class B and EN61000-4 immunity standards, along with IEC62368-1 and UL60950-1 safety standards.

Does the ERDN20-12 provide status monitoring for redundancy systems?

Yes. It includes built-in 2-channel DC OK signaling and an alarm relay contact for status indication. The general specification also lists the DC OK signal as relay contact.

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	IP Rating
Mean Well ERDN20-24 Redundancy Module Power Supply 20A	480W	24V	20A	Indoor	View
Mean Well ERDN20-5 Redundancy Module Power Supply 20A	100W	5V	20A	Indoor	View
Mean Well ERDN20-48 Redundancy Module Power Supply 20A	960W	48V	20A	Indoor	View

Please log in to write a review.

{ "id":8442017022251, "variants" :[{ "context":"default", "variant_id": 45708960694571, "sku":"ERDN20-12", "inventory_qty" : 0, "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

✓ Wide operating temperature: -40~+85℃

✓ Protections: Short circuit / Overload

✓ DC OK relay contact output

✓ Safety approvals: WITHSTAND VOLTAGE ISOLATION RESISTANCE IEC62368-1, UL62368-1, EAC TP TC 004

✓ 3 years warranty

Mean Well ERDN20-12 Redundancy Module Power Supply 20A

Key Features

Frequently Asked Questions

Payment & Security

Other ERDN20 Models

Write a review

Your cart

Mean Well ERDN20-12 Redundancy Module Power Supply 20A

Key Features

Company Information

Services and Support

Choose options