Blade boxes
- for dull blades
- special closure
- in 4 sizes
Art. no. UM525001
At a glance
Prices in EUR, net – for business customers only. Shipping: €14 flat rate within Europe, free of charge from €300 goods value (Shipping costs, in German) · Delivery time on request
| Quantity discount | net / pc. |
|---|---|
| from 20 pcs. (−3 %) | 12.46€ |
| from 50 pcs. (−6 %) | 12.08€ |
Cutting depth 21 mm | metal housing | wide housing opening at the front
martor Secunorm 525 is a safety level 1 safety knife with automatic blade retraction. The blade retracts as soon as the thumb releases the slider.
The housing is made of robust aluminium (metal housing), and the particularly ergonomic design combines a large thumb slider with particularly smooth operation. The knife is therefore designed for intensive use of more than 1,000 cuts per day.
After a simple conversion, the Secunorm 525 can be used by left- and right-handed users. The tool-free blade change can be carried out directly at the workstation, the knife is GS-certified and has a wide housing opening at the front that keeps the blade retraction working reliably even when dirty.
Thanks to its universal use, the Secunorm 525 is suitable for a wide range of applications, especially in logistics for opening and processing cardboard, adhesive tape and PVC film. Safety knives overview
Which materials is this knife made for — and where does it reach its limits?
PVC film and sheeting are cut and trimmed to length cleanly with the sharp trapezoid blade.
Thanks to the wide blade opening, thicker film, shrink hoods and covers can be cut through cleanly and without snagging.
Opening cartons in goods receiving, cutting off flaps and breaking them down is done in a controlled way with the trapezoid blade, without damaging the contents.
Not every safety knife is built the same – and you only notice it when it matters in everyday use. In the knife know-how section we show you at a glance how the Secunorm 525 performs in the most important respects: from the safety mechanism and grip quality to blade performance. This lets you judge whether it suits your application. If you have questions about the choice, we are happy to advise you personally.
Automatic blade retraction — the blade retracts by itself as soon as you release the handle, no need to push it back manually.
All safety levels explained →
All technical details of the Secunorm 525 at a glance: the technical data sheet contains dimensions, blade specifications, blade change instructions and safety information – as an A4 PDF to download.
Technical data, blade change instructions and safety notes – DIN A4
Download →The Secunorm 525 is supplied with a KM60099 (trapezoid blade made of premium carbon steel, rounded tips). The knife accepts only trapezoid blades from the martor 99 series – pay attention to compatibility when buying. Our recommendation for everyday use: the KM60099. Overview of all trapezoid blades
rounded cornersPremium carbon steelrounded tips5.43€ net
View KM60099
Stainless steel, rounded cornersPremium stainless steelrounded tips7.75€ netView KM160099
universalPremium carbon steelwith tips4.70€ netView KM99
Stainless steelwith tips60 mm length7.32€ netView KM199
universal – TiNPremium carbon steelTiN coating (long edge life)4.35€ net
View KB1-99
for Martor 99 hole patternPremium carbon steelPull hook11.06€ netView KM98If you need a longer cutting depth, the Secunorm 540 is the right variant from the same series: it shares the one-sided raised slider and the automatic blade retraction with the Secunorm 525, but has a blade around 4 cm long instead of the compact 21 mm – ideal for deeper cuts in thicker materials.
The Secunorm 525 belongs to the most widespread category of safety knives with safety level 1, automatic blade retraction and a blade length of around 20 mm. A direct comparison shows differences in detail: the US10 uses a slider on both sides and a universal rather than proprietary blade, the Tajima VRex 103 has a complete metal housing with a slider on the back of the knife, the U014 also has a metal housing, but with the slider on top, and the U013 is the low-priced basic version with a wide handle.
Safe 10automatic blade retraction2 cm cutting depthBlade change possible10.23€ netView US10
VRex 103all parts made of metalautomatic blade retractionBlade change possible13.82€ net
View U010
ComfortMetal housingautomatic blade retractionBlade change possible6.99€ net
View U014RECOMMENDED
Basic longautomatic blade retraction2 cm blade lengthBlade change possible2.99€ netView U013Complement the Secunorm 525 with matching accessories: collection boxes for dull blades, lanyards as a safety cord, cutting rulers for precise cuts and holsters for safe storage.
Frequently asked questions about the Secunorm 525 – we answer them here in detail. If you have further questions, we are happy to help you personally: To the contact form
MARTOR KG – Lindgesfeld 28 – 42653 Solingen – info@martor.deThis knife is a sharp working tool. Use only as intended. Keep out of the reach of children. Wear suitable protective gloves if necessary. Replace blades safely in accordance with the blade change instructions – do not make any improper modifications.
