---
product_id: 168342302
title: "3UB81234EW2 Solid State Overload Relay, ESP200 Catalog No. 48ATE3S00, 10 to 40A, Frame Size A1, 3-Phase, Class 5/10/20/30 Adjustable, Manual/Automatic Reset"
brand: "siemens"
price: "NZ$632"
currency: NZD
in_stock: true
reviews_count: 1
category: "Siemens"
url: https://www.desertcart.nz/products/168342302-3ub81234ew2-solid-state-overload-relay-esp200-catalog-no-48ate3s00-10
store_origin: NZ
region: New Zealand
---

# 10-40A adjustable current range Selectable Trip Classes 5/10/20/30 UL & CSA certified safety 3UB81234EW2 Solid State Overload Relay, ESP200 Catalog No. 48ATE3S00, 10 to 40A, Frame Size A1, 3-Phase, Class 5/10/20/30 Adjustable, Manual/Automatic Reset

**Brand:** siemens
**Price:** NZ$632
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your overload protection—smart, sleek, and ready to power your success!

## Quick Answers

- **What is this?** 3UB81234EW2 Solid State Overload Relay, ESP200 Catalog No. 48ATE3S00, 10 to 40A, Frame Size A1, 3-Phase, Class 5/10/20/30 Adjustable, Manual/Automatic Reset by siemens
- **How much does it cost?** NZ$632 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/168342302-3ub81234ew2-solid-state-overload-relay-esp200-catalog-no-48ate3s00-10)

## Best For

- siemens enthusiasts

## Why This Product

- Trusted siemens brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **User-Friendly Reset:** Accessible reset button with visible and audible trip indicators ensures quick, confident restarts.
- • **Certified Reliability:** UL Listed and CSA Certified for trusted performance in demanding industrial environments.
- • **Precision Current Control:** Fine-tune overload protection with a 4:1 current adjustment dial for exact full load amps.
- • **Heaterless Solid State Design:** Eliminate bulky heaters and reduce enclosure heat, cutting ventilation and cooling costs.
- • **Versatile Trip Class Selection:** Easily switch between Trip Classes 5, 10, 20, or 30 via DIP switches to match your application perfectly.

## Overview

The Siemens 3UB81234EW2 ESP200 Solid State Overload Relay offers adjustable 10-40A current protection with selectable trip classes (5, 10, 20, 30) via DIP switches. Its heaterless design minimizes heat buildup, reducing cooling needs and costs. Featuring a removable terminal block with touch-safe terminals, an easy reset button with audible/visible trip alerts, and UL/CSA certification, it’s engineered for reliable, versatile industrial use.

## Description

Siemens ESP200 Solid State Overloads. Designed for a wide variety of applications. The field selectable Trip Class 5, 10, 20 or 30 can easily be set by 2 DIP switches. This eliminates the guess factor of an application requirements and provides reduced inventory for multiple applications. The inherent benefits of the ESP200 ultimately results in cost savings for the user. ESP200 has a 4: 1 current adjustment range with a fine adjustment dial labeled in full load amps. The heater less overload minimizes the heat trapped in the enclosures, reduces cost for ventilation or cooling. Easily accessible Reset button, provides visible and audible indications to ensure the tripped overload is ready to re-start.

Review: Relay - works great when it's not broken

## Features

- Siemens MLFB 3UB81234EW2 or Catalog No 48ATE3S00
- Trip Classes - 5, 10, 20, or 30 Selectable by DIP-switches
- Solid State Electronic Overload - No Heaters Required
- Removable Terminal Block with Touch safe Terminals
- UL Listed, CSA Certified

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00QW2QDOW |
| Best Sellers Rank | #323,004 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #87 in Overload Relays |
| Date First Available | December 11, 2014 |
| Item Weight | 14.6 ounces |
| Item model number | 3UB81234EW2 |
| Manufacturer | Siemens |
| Product Dimensions | 4.1 x 3.4 x 3 inches |

## Images

![3UB81234EW2 Solid State Overload Relay, ESP200 Catalog No. 48ATE3S00, 10 to 40A, Frame Size A1, 3-Phase, Class 5/10/20/30 Adjustable, Manual/Automatic Reset - Image 1](https://m.media-amazon.com/images/I/81JyHsGwdyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Relay
*by L***R on February 29, 2024*

works great when it's not broken

## Frequently Bought Together

- Siemens 3UB81234EW2 Solid State Overload Relay, ESP200 Catalog No. 48ATE3S00, 10 to 40A, Frame Size A1, 3-Phase, Class 5/10/20/30 Adjustable, Manual/Automatic Reset
- Siemens 75D73070C Starter and Contactor AC Coil, 00-2-1/2 Size, P U ESP200 Model, 220-240/440-480V 60Hz, 190-220/380-440V 50Hz, Black

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-05-07*