--- product_id: 424761086 title: "LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red)" brand: "lby" price: "€ 30.45" currency: EUR in_stock: true reviews_count: 11 category: "Lby" url: https://www.desertcart.hr/products/424761086-lby-4pcs-busbar-insulator-sm-40-polyester-standoff-insulators-screw store_origin: HR region: Croatia --- # 600V operating voltage insulation Heat resistant up to 2500°F M8 screw for secure fastening LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) **Brand:** lby **Price:** € 30.45 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your power game with LBY’s high-strength insulated busbar connectors! ## Quick Answers - **What is this?** LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) by lby - **How much does it cost?** € 30.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/424761086-lby-4pcs-busbar-insulator-sm-40-polyester-standoff-insulators-screw) ## Best For - lby enthusiasts ## Why This Product - Trusted lby brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact 40mm Height:** Space-saving design fits perfectly in tight electrical panels without compromising performance. - • **Complete 4-Piece Set:** Everything you need to upgrade your busbar insulation and connection in one sleek package. - • **Premium Resin Insulation:** High-strength polyester resin offers superior heat, fire, and water resistance—built to last. - • **Robust M8 Screw Terminal:** Ensures rock-solid, vibration-proof busbar connections for your power setup. - • **High Voltage & Pulse Endurance:** Rated for 600V operating and 5000V pulse voltage—engineered for demanding power distribution. ## Overview The LBY SM-40 Busbar Insulator Set features four 40mm high polyester resin standoff insulators with M8 copper screw terminals, designed for secure, insulated connections in power distribution cabinets. Rated for 600V operating voltage and heat resistant up to 2500°F, these insulators provide excellent electrical insulation, mechanical strength, and durability, making them ideal for professional-grade electrical installations. ## Description LBY Wire Junction Post SM-40 Polyester Standoff Insulated Junction Post with Screw ● Product: - SM-40 - Height: 40 mm - Material: resin - Nut size: M8 - Nut material:copper - Screw hole depth:10.5mm - Strength: axial tensile 3000N, bending 5000N, tightening torque 15N/ m - Insulation resistance >1000MΩ - Electrical properties: Operating voltage:600V, pulse voltage:5000V - Leakage current <1mA at 2000V operating voltage - Minimum arc distance: 15 (mm) ● Package: - SM-40 ------- 4pcs ● Description: - The product is generally cylindrical, with one screw hole at each end and a screw to fix the line that needs to be connected. - Widely used in high low power distribution cabinet.For power distribution, transmission, fixing copperor alumnium busbar, etc, play the role of insulation and connection. - Good electrical resistance, heat resistance, fire resistance, low shrinkage and water resistance.Excellent texture and good workmanship are your choice. Review: Insulated electrical stand offs - Worked great for mounting bus bars in an electric panel, good robust parts Review: High Quality - The resin body is very tough. I appreciate having complete dimensions, since i'm using them in a tight space. I do worry about the long-time corrosion-resistance of the 'chromate-like' plating on the screws; wish they were stainless steel. ## Features - 1.SM-40(with screw)enhanced busbar insulator connector, complex insulators. - 2.Material: resin; Colour: red. - 3.Size : SM-40: product height: 40mm(1.57''). - 4.Contains: 4 pieces, with screw(M8). - 5.Use: widely used in high low power distribution cabinet, play the role of minsulation and connection. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09H387424 | | Best Sellers Rank | #198,923 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #889 in Butt Terminals #42,291 in Electrical Equipment | | Brand Name | LBY | | Color | red | | Connector Gender | Male | | Connector Type | Screw | | Contact Material | Copper | | Customer Reviews | 4.6 out of 5 stars 73 Reviews | | Insulation Material | resin | | Insulation Material Type | resin | | Manufacturer | LBY | | Material | resin | | Material Type | resin | | Maximum Voltage | 600 Volts | | Model | LBY-034-8 | | Number of Items | 4 | | Part Number | LBY-034-8 | | Specification Met | UL | | Stud Size | m8 | | Temperature Rating | 2500 degree fahrenheit | | Terminal | Screw Terminal | | UPC | 663274968133 | | Unit Count | 4.0 Count | ## Product Details - **Color:** red - **Connector Type:** Screw - **Contact Material:** Copper - **Insulation Material:** resin - **Terminal:** Screw Terminal ## Images ![LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) - Image 1](https://m.media-amazon.com/images/I/81s44PMMn5L.jpg) ![LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) - Image 2](https://m.media-amazon.com/images/I/71QnvD4mrXL.jpg) ![LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) - Image 3](https://m.media-amazon.com/images/I/81ZSN3Fqz8L.jpg) ![LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) - Image 4](https://m.media-amazon.com/images/I/81q6cuNwyPL.jpg) ![LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) - Image 5](https://m.media-amazon.com/images/I/71yU3oyUqDL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Do they come in black?** A: No, it's a red shell with a yellow inside **Q: is it UL certified?** A: Yes they are. I used them in junction box for a ground bar. Worked out well. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Insulated electrical stand offs *by R***N on September 4, 2025* Worked great for mounting bus bars in an electric panel, good robust parts ### ⭐⭐⭐⭐ High Quality *by O***N on May 22, 2025* The resin body is very tough. I appreciate having complete dimensions, since i'm using them in a tight space. I do worry about the long-time corrosion-resistance of the 'chromate-like' plating on the screws; wish they were stainless steel. ### ⭐⭐⭐⭐⭐ Great *by R***. on December 17, 2024* Perfect for make a busbar ## Frequently Bought Together - LBY 4pcs Busbar Insulator, SM-40 Polyester Standoff Insulators with Screw(M8), High-Strength Insulated Junction Post, Resin(Red) - BTF-LIGHTING AC100-240V to DC5V20A Max100W Switching Power Supply Device Transformer Adapter Converter for LED Strip/String/LED Matrix,CCTV Camera,Security System,Radio,Cats - ACEIRMC ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter with Programmable Gain Amplifier High Precision ADC Converter Development Board for Arduino Raspberry Pi (5pcs) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/424761086-lby-4pcs-busbar-insulator-sm-40-polyester-standoff-insulators-screw](https://www.desertcart.hr/products/424761086-lby-4pcs-busbar-insulator-sm-40-polyester-standoff-insulators-screw) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-22*